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Men's Navy Gilbert Atomic X II Undershort, with flat lock seams from O'Neills.
Men's Navy Gilbert Atomic X II Undershort, with flat lock seams from O'Neills.
View Full Details

Gilbert Men's Atomic X II Undershort Dark Navy

US$23.00
Earn 115 Reward Points
Size Guide

These size charts should be used as a guide to determine the most suitable size. Please note, sizes and fit may vary between styles due to different cuts and fabrics being used.

  • MEN
    • Clothing
      • O'Neills Jerseys
        Jerseys - Regular / Standard Fit - Adult
        SIZE
        Chest inch
        Chest cm
             
        Small 43-44 107-109.5
        Medium 44-45 111-113.5
        Large 46-47 115-117.5
        X-Large 47-48 119-121.5
        2XL 49-50 123.125.5
        3XL 50-51 127-129.5
        4XL 52-53 131-133.5
        5XL 54-55 135-137.5
        6XL 55-56 139-141.5
        7XL 57-58 143-145.5
        Jerseys - Player Fit - Adult

        Player fit is a tighter fit jersey. It is usually 2-3 inches tighter around the arms and body compared to our regular fit jerseys. It is a more professional body hugging fit in the style worn by players on the pitch.

        SIZE
        Chest inch
        Chest cm
             
        Small 39-40 99-101.5
        Medium 41-42 103-105.5
        Large 43-44 107-109.5
        X-Large 44-45 111-113.5
        2XL 46-47 115-117.5
        3XL 47-48 119-121.5
      • O'Neills Leisurewear
        O'Neills - Mens/Unisex
        Size Chest Waist
        inch cm inch cm
        XXS 34-35" 86-89 28-29" 71-73.5
        XS 35-36" 89-91.5 29-30" 73.5-76
        S 37-38" 94-96.5 31-32" 78-81
        M 39-40" 99-101.5 33-34" 83-86
        L 41-42" 104-107 35-36" 88-91.5
        XL 43-44" 109-112 38-40" 96.5-102
        2XL 45-46" 114-117 42-44" 106.5-111
        3XL 47-48" 119-121 - -
        4XL 49-50" 123-125 - -
        5XL 51-52" 127-129 - -
        O'Neills - Mens/Unisex Inside Leg
        Size Regular Skinny
        inch cm inch cm
        S 30-31" 78-80 30-31" 76-79
        M 31-32" 79-81 30-31" 77-79
        L 31-32" 79-81 30-31" 77-79
        XL 31-32" 79-82 31-32" 77-81
        2XL 31-32" 79-82 31-32" 77-81
        O'Neills - Single Size Conversion
        UK Size
        US Size
        Euro Size
             
        S 34-36 44-46
        M 38-40 48-50
        L 42-44 52-54
        XL 46 56
        2XL 48 58
        3XL 50 60
      • O'Neills Shorts
        O'Neills Shorts - Men's
        Size
        Waist
        Inside Leg
          inch cm
        XS 30 11.5
        S 32 11.5
        M 34 11.5
        L 36 11.5
        XL 38 11.5
        2XL 40 11.5
        3XL 42 13.5
        4XL 44 13.5
        5XL 46 13.5
      • Asics
        Asics - Mens Clothing
        Size
        Chest cm
        Waist cm
        Hips cm
               
        XS 80-88 67-75 79-87
        S 88-96 75-83 87-95
        M 96-104 83-91 95-103
        L 104-113 91-100 103-111
        XL 113-124 100-111 111-119
        XXL 124-136 111-123 119-128
        XXXL 136-148 123-135 128-138
      • Berghaus
        Berghaus - Mens Tops
        Size
        Chest in
        Chest cm
        Arm in
        Arm cm
                 
        XS 33-35 84-89 32.5 82.5
        S 36-38 91-97 33 84
        M 39-41 99-104 34 86.5
        L 42-44 106-111 35 89
        XL 45-47 114-120 36 91.5
        2XL 48-50 122-127 36.5 93
        3XL 51-53 129-135 37 94
      • Canterbury
        Canterbury - Mens Tops
        Size
        Chest cm
        Chest in
             
        XS 86 - 91.5 34 - 36
        S 94 - 99 37 - 39
        M 99 - 104 39 - 41
        L 104 - 109 41 - 43
        XL 109 - 114.5 43 - 45
        2XL 117 - 122 46 - 48
        3XL 124.5 - 129.5 49 - 51
        4XL 132 - 134.5 52 - 53
        Canterbury - Mens Bottoms & Shorts
        Size
        Waist cm
        Waist in
             
        XS 71 - 76 28 - 30
        S 76 - 81.5 30 - 32
        M 81.5 - 86 32 - 34
        L 86 - 91.5 34 - 36
        XL 91.5 - 96.5 36 - 38
        2XL 96.5 - 102 38 - 40
        3XL 102 - 106.5 40 - 42
        4XL 106.5 - 112 42 - 44
      • Columbia
        Columbia - Mens Tops
        Size
        Neck in
        Chest in
        Sleeve in
               
        XS 14-14.5 32-35 33
        S 15-15.5 35-38 33
        M 16-16.5 38-41 34
        L 17-17.5 42-45 35
        XL 18-18.5 46-49 36
        XXL 19-19.5 50-53 37
        Columbia - Mens Bottoms
        Size
        Waist in
        Hips in
             
        XS 26-29 32-34
        S 29-32 35-37
        M 32-35 38-40
        L 36-39 41-43
        XL 40-43 44-46
        XXL 44-47 48-50
      • Copa
        Copa - Mens Retro Football Shirt
        Size Length Chest width
        cm inch cm inch
        XS 66.5 26.2 45.5 17.9
        S 69.5 27.4 48.5 19.1
        M 72.5 28.5 51.5 20.3
        L 75.5 29.7 54.5 21.5
        XL 78.5 30.9 57.5 22.6
        2XL 81.5 32.1 60.5 23.8
        Copa - T-Shirts
        Size Length Chest width
        cm inch cm inch
        XS 66.5 26.2 44 17.3
        S 69.5 27.4 47 18.5
        M 72.5 28.5 50 19.7
        L 75.5 29.7 53 20.9
        XL 78.5 30.9 56 22
        2XL 81.5 32.1 59 23.2
      • Portwest
        Portwest - Mens Chest
        Size
        cm
        inches
             
        XXS 72-76 28-30
        XS 80-88 32-34
        S 92-96 36-38
        M 100-104 40-41
        L 108-112 42-44
        XL 116-124 46-48
        2XL 128-132 50-52
        3XL 136-140 54-55
        4XL 144-148 56-58
        5XL 152-160 60-64
        6XL 164-172 65-67
        7XL 176-184 69-73
        8XL 188-196 74-77

        Portwest - Mens Waist
        Size
        cm
        inches
             
        XS 68-72 26-28
        S 76-80 30-32
        M 84-88 33-34
        L 92-96 36-38
        XL 100-104 40-41
        2XL 108-112 42-44
        3XL 116-120 46-47
        4XL 124-128 48-50
        5XL 132-140 52-56

        Portwest - Mens Neck
        Size
        cm
        inches
             
        M 37-38 14.5-15
        L 39-41 15.5-16
        XL 42 16.5
        2XL 43-44 17-17.5
        3XL 46-48 18-19
        4XL 50-51 19.5-20

      • Puma
        Puma - Mens Clothing
        Size
        Chest inch
        Waist inch
        Hips inch
               
        XS 31-33 27-29 32-34
        S 34-37 30-32 35-37
        M 37-40 32-35 37-40
        L 40-44 35-39 40-44
        XL 44-48 39-43 44-48
        2XL 48-52 43-47 48-51
        3XL 53-58 48-53 51-56
      • Speedo
        Speedo - Mens Swimwear
        Speedo Size
        Waist
        Hip
             
        24 24" 29.5"
        26 26" 31.5"
        28 28" 33.5"
        30 30" 36.5"
        32 32" 37.5"
        34 34" 39.5"
        38 38" 43.5"
        40 40" 45.5"
        42 42" 47.5"
        44 44" 49.5"
        46 46" 51.5"

        Speedo swimsuits are designed to have a close fit to your body to help you have the best swim. If you would like a looser fit you can go up a size..

        Speedo - Mens Swim Shorts
        Size
        Waist
        Hip
             
        XXS 28" 33.5"
        XS 30" 35.5"
        S 32" 37.5"
        M 34" 39.5"
        L 36" 43.5"
        XL 38" 43.5"
        2XL 40" 45.5"
        3XL 42" 47.5"

        Swim shorts with an elasticated waist have a bigger size range as they stretch a little more

      • Trespass
        Trespass - Mens Clothing
        Size
        Chest inch
        Waist inch
        Inside Leg
               
        XS 33-35 28-30 29.5
        S 35-37 30-32 30
        M 38-40 33-35 30.5
        L 41-43 36-38 31
        XL 44-46 39-41 31.5
        2XL 46-48 41-43 32
        3XL 48-50 43-45 32.5
      • Under Armour
        Under Armour - Mens Tops
        SIZE
        Chest inch
        Waist inch
             
        XS 30-32 26.5-27.5
        S 34-36 28-29
        M 38-40 30-32
        L 42-44 34-36
        XL 46-48 38-40
        2XL 50-52 42-44
        3XL 52-54 44-46
        4XL 54-56 46-48
        5XL 56-58 48-50
        Under Armour - Mens Bottoms
        SIZE
        Waist inch
        Hip inch
             
        XS 26.5-27.5 32-33
        S 28-29 34-35.5
        M 30-32 37-38.5
        L 34-36 40-42.5
        XL 38-40 44-46
        2XL 42-44 48-50
        3XL 44-46 52-54
        4XL 46-48 56-58
        5XL 48-50 60-62
      • Urban Beach Wetsuits
        Blacktip Mens Short Wetsuit
        Size
        Height cm
        Chest cm
        Waist cm
               
        XS 160-165 81.86 66-71.1
        S 165-170 86-91.5 68.5-73.6
        M 172-178 91.5-96.5 73.6-78.7
        L 178-183 96.5-101.5 81.2-86.3
        XL 183-188 101.5-107 86.3-91.4
        2XL 183-188 105.5-110.5 90.1-95.2
        3XL 185-190 109-114 95.2-99
        Blacktip Mens Long Wetsuit
        Size
        Height cm
        Chest cm
        Waist cm
               
        XS 160-165 81.86 66-71.1
        S 165-170 86-91.5 68.5-73.6
        M 172-178 91.5-96.5 73.6-78.7
        L 178-183 96.5-101.5 81.2-86.3
        XL 183-188 101.5-107 86.3-91.4
        2XL 183-188 105.5-110.5 90.1-95.2
        3XL 185-190 109-114 95.2-99
    • Footwear
      • Asics
        ASICS - Mens Running Shoes
        Ireland / UK
        EU
        CM
        US
               
        6 40 25.25 7
        6.5 40.5 25.5 7.5
        7 41.5 26 8
        7.5 42 26.5 8.5
        8 42.5 27 9
        8.5 43.5 27.5 9.5
        9 44 28 10
        9.5 44.5 28.25 10.5
        10 45 28.5 11
        10.5 46 29 11.5
        11 46.5 29.5 12
        11.5 47 30 12.5
        12 48 30.5 13
        13 49 31 14
      • Puma
        Puma - Mens Footwear
        Ireland / UK
        Europe
        US
        JP
               
        6 39 7 25
        6.5 40 7.5 25.5
        7 40.5 8 26
        7.5 41 8.5 26.5
        8 42 9 27
        8.5 42.5 9.5 27.5
        9 43 10 28
        9.5 44 10.5 28.5
        10 44.5 11 29
        10.5 44.5 11 29
        11 46 12 30
        11.5 46.5 12.5 30.5
        12 47 13 31
        12.5 48 13.5 31
        13 48.5 14 31.5

      • Skechers
        Skechers - Mens Footwear
        Ireland / UK
        Europe
        US
             
        5.5 39 6.5
        6 39.5 7
        6.5 40 7.5
        7 41 8
        8 42 9
        8.5 42.5 9.5
        9 43 10
        9.5 44 10.5
        10 45 11
        10.5 45.5 11.5
        11 46 12
        11.5 47 12.5
        12 47.5 13
        12.5 48 13.5
        13 48.5 14

      • Trespass
        Trespass - Mens Footwear
        Ireland / UK
        EU
        US
        Length cm
               
        6 40 7 24.6
        7 41 8 25.4
        7.5 41.5 8.5 25.8
        8 42 9 26.2
        8.5 42.5 9.5 26.6
        9 43 10 27.1
        9.5 43.5 10.5 27.5
        10 44 11 27.9
        10.5 44.5 11.5 28.3
        11 45 12 28.8
        12 46 13 29.6
        13 47 14 30.5
      • Under Armour
        Under Armour - Mens Footwear
        Inches
        Ireland / UK
        Euro
        US Men
               
        9 7/8 6 40 7
        10 6.5 40.5 7.5
        10 1/4 7 41 8
        10 3/8 7.5 42 8.5
        10 5/8 8 42.5 9
        10 7/8 8.5 43 9.5
        11 9 44 10
        11 1/4 9.5 44.5 10.5
        11 3/8 10 45 11
        11 5/8 10.5 45.5 11.5
        11 3/4 11 46 12
        12 11.5 47 12.5
        12 1/4 12 47.5 13
        12 3/8 12.5 48 13.5
        12 5/8 13 48.5 14
  • WOMEN
    • Clothing
      • O'Neills Leisurewear
        O'Neills Womens
        Size Chest Waist
          inch cm inch cm
        8 32" 81 26" 66
        10 34" 86.5 28" 71
        12 36" 91 30" 76
        14 38" 97 32" 81
        16 40" 102 34" 86
        18 42" 107 36" 91.5

        Womens - Single Size Conversion
        UK Size
        US Size
        Euro Size
             
        8 4 36
        10 6 38
        12 8 40
        14 10 42
        16 12 44
        18 14 46

      • O'Neills Jerseys
        Jerseys - Women's Fit
        SIZE
        Chest inch
        Chest cm
             
        8 37-38 96
        10 39-40 100
        12 41-42 104
        14 42-43 108
        16 44 112
        18 45-46 116
        Jerseys - Regular / Standard Fit - Adult
        SIZE
        Chest inch
        Chest cm
             
        Small 43-44 107-109.5
        Medium 44-45 111-113.5
        Large 46-47 115-117.5
        X-Large 47-48 119-121.5
        2XL 49-50 123.125.5
        3XL 50-51 127-129.5
        4XL 52-53 131-133.5
        5XL 54-55 135-137.5
        6XL 55-56 139-141.5
        7XL 57-58 143-145.5
        Jerseys - Player Fit - Adult

        Player fit is a tighter fit jersey. It is usually 2-3 inches tighter around the arms and body compared to our regular fit jerseys. It is a more professional body hugging fit in the style worn by players on the pitch.

        SIZE
        Chest inch
        Chest cm
             
        Small 39-40 99-101.5
        Medium 41-42 103-105.5
        Large 43-44 107-109.5
        X-Large 44-45 111-113.5
        2XL 46-47 115-117.5
        3XL 47-48 119-121.5
      • O'Neills Skorts & Shorts
        O'Neills - Skorts
        Size Waist Inside Leg
        inch cm cm
        8 24 62 10.5
        10 26 66 10.5
        12 28 70 10.5
        14 30 74 10.5
        16 31 78 10.5
        18 32 82 10.5

        O'Neills Shorts - Women's
        Size
        Waist
        Inside Leg
          inch cm
        8 26 9.5
        10 28 10.5
        12 30 11.5
        14 32 11.5
        16 34 11.5
        18 36 11.5
      • Asics
        Asics - Womens Clothing
        Size
        Chest cm
        Waist cm
        Hips cm
               
        XXS 69-75 52-58 76-82
        XS 75-82 58-65 82-89
        S 82-89 65.72 89-96
        M 89-96 72-79 96-103
        L 96-104 79-87 103-111
        XL 104-114 87-96 111-119
        XXL 114-124 96-107 119-127

      • Berghaus
        Berghaus - Womens Tops
        Size
        Chest in
        Chest cm
        Arm in
        Arm cm
                 
        8 32 81 28.5 72.5
        10 34 86 29 74
        12 36 91 30 76
        14 38 96 30.5 78
        16 40 101 31.5 80
        18 42 106 32 81.5
        20 44 112 32 81.5
      • Canterbury
        Canterbury - Womens Tops
        Size
        Chest cm
        Chest in
             
        6 75cm 30"
        8 82cm 32"
        10 87cm 34"
        12 92cm 36"
        14 97cm 38"
        16 102cm 40"
        18 107cm 42"
        Canterbury - Womens Bottoms & Shorts
        Size
        Waist cm
        Waist in
        Hip cm
        Hip in
                 
        6 55cm 22" 85cm 33"
        8 62cm 24" 90cm 35"
        10 67cm 26" 95cm 37"
        12 72cm 28" 100cm 39"
        14 77cm 30" 105cm 41"
        16 82cm 32" 110cm 43"
        18 87cm 34" 115cm 45"
      • Columbia
        Columbia - Womens Tops
        Size
        Bust in
        Waist in
        Hips in
               
        XS 32-33 25.5-26.5 34.5-35.5
        S 34-35 27.5-28.5 36.5-37.5
        M 36-37.5 29.5-30.5 38.5-40
        L 39-40 32-33.5 41.5-43
        XL 42-44.5 35.5-37.5 45-47
        Columbia - Womens Bottoms
        Size
        Waist in
        Hips in
             
        XS 25.5-26.5 34.5-35.5
        S 27.5-28.5 36.5-37.5
        M 29.5-30.5 38.5-40
        L 32-33.5 41.5-43
        XL 35.5-37.5 45-47
      • Elle Sport
        Elle Sport - Womens Clothing
        Size Bust Waist
          cm inch cm inch
        XS 81.5 32 65 25.5
        S 86.5 34 70 27.5
        M 91.5 36 75 29.5
        L 96.5 38 80 31.5
        XL 101.5 40 85 33.5

      • Puma
        Puma - Womens Clothing
        Size
        UK
        Chest inch
        Waist inch
               
        XXS 6 30 24
        XS 8 32 26
        S 10 34 28
        M 12 36 30
        L 14 38 32
        XL 16 40 34

      • Ronhill
        Ronhill - Womens Clothing
        Size Bust Waist
          inch cm inch cm
        6 29.5-31 71-76 23-24.5 58-62
        8 31-35.5 76-83 24.5-26 62-66
        10 32.5-34.5 83-88 26-28 66-71
        12 34.5-36.5 88-93 28-30 71-76
        14 36.5-39.5 93-100 30-32 76-81
        16 39.5-41.5 100-105 32-34 81-86

      • Speedo
        Speedo - Womens Swimwear
        UK Size
        Bust
        Waist
        Hip
        Speedo Size
                 
        6 28-30" 22" 32" 28
        8 30-32" 24" 34" 30
        10 32-34" 26" 36" 32
        12 34-36" 28" 38" 34
        14 36-38" 30" 40" 36
        16 38-40" 32" 42" 38

        Speedo swimsuits are designed to have a close fit to your body to help you have the best swim. If you would like a looser fit you can go up a size..

      • Trespass
        Trespass - Womens Clothing
        Size
        UK
        Bust inch
        Waist inch
        Inside Leg
                 
        XXS 6 31 26 28.5
        XS 8 32 27 29
        S 10 34 28 30
        M 12 36 30 30.25
        L 14 38 32 30.5
        XL 16 40 34 31
      • Under Armour
        Under Armour - Womens Tops
        SIZE
        Bust inch
        Waist inch
             
        XS 31-33 23-25
        S 33.5-35.5 25.5-27.5
        M 36-38 28-30
        L 38.5-40.5 30.5-32.5
        XL 41-43 33-35

        Under Armour - Womens Bottoms
        SIZE
        Waist inch
        Hip inch
             
        XS 23-25 33-35
        S 25.5-27.5 35.5-37.5
        M 28-30 38-40
        L 30.5-32.5 40.5-42.5
        XL 33-35 43-45

      • Urban Beach Wetsuits
        Sailfin Womens Short Wetsuit
        Size
        Height cm
        Chest cm
        Waist cm
               
        XS 157.5-161.5 78.5-84 63.5-68.6
        S 162-166 82.5-87.5 67.3-72.4
        M 163-171 87.5-92.5 69.8-74.9
        L 171-175 91.5-96.5 73.6-78.7
        XL 176-180 96.5-101.5 81.2-86.3
        Sailfin Womens Long Wetsuit
        Size
        Height cm
        Chest cm
        Waist cm
               
        XS 157.5-161.5 78.5-84 63.5-68.6
        S 162-166 82.5-87.5 67.3-72.4
        M 163-171 87.5-92.5 69.8-74.9
        L 171-175 91.5-96.5 73.6-78.7
        XL 176-180 96.5-101.5 81.2-86.3
    • Footwear
      • Asics
        Asics - Womens Running Shoes
        Ireland / UK
        EU
        CM
        US
               
        3 35.5 22.5 5
        3.5 36 22.75 5.5
        4 37 23 6
        4.5 37.5 23.5 6.5
        5 38 24 7
        6 39.5 25 8
        6.5 40 25.5 8.5
        7 40.5 25.75 9
        7.5 41.5 26 9.5
        8 42 26.5 10
        8.5 42.5 27 10.5
        9 43.5 27.5 11

      • Puma
        Puma - Womens Footwear
        Ireland / UK
        Europe
        US
        JP
               
        3 35.5 5.5 22
        3.5 36 6 22.5
        4 37 6.5 23
        4.5 37.5 7 23.5
        5 38 7.5 24
        5.5 38.5 8 24.5
        6 39 8.5 25
        6.5 40 9 25.5
        7 40.5 9.5 26
        7.5 41 10 26.5
        8 42 10.5 27
        8.5 42.5 11 27.5

      • Skechers
        Skechers - Womens Footwear
        Ireland / UK
        Europe
        US
             
        3 36 6
        3.5 36.5 6.5
        4 37 7
        4.5 37.5 7.5
        5 38 8
        5.5 38.5 8.5
        6 39 9
        6.5 39.5 9.5
        7 40 10
        7.5 40.5 10.5
        8 41 11
        9 42 12
        10 43 13

      • Trespass
        Trespass - Womens Footwear
        Ireland / UK
        EU
        US
        Length cm
               
        3 36 5 22
        4 37 6 22.9
        5 38 7 23.7
        6 39 8 24.6
        7 40 9 25.4
        8 41 10 26.2
        9 42 11 27
      • Under Armour
        Under Armour - Womens Footwear
        Inches
        Ireland / UK
        Euro
        US Women
               
        8 3/4 2.5 35.5 5
        8 7/8 3 36 5.5
        9 1/8 3.5 36.5 6
        9 1/4 4 37.5 6.5
        9 3/8 4.5 38 7
        9 5/8 5 38.5 7.5
        9 3/4 5.5 39 8
        10 6 40 8.5
        10 1/8 6.5 40.5 9
        10 3/8 7 41 9.5
        10 5/8 7.5 42 10
        10 3/4 8 42.5 10.5

  • KIDS
    • Clothing
      • O'Neills Leisurewear
        O'Neills - Kids Leisurewear
        Size Chest Waist
          inch cm inch cm
        5/6 25-26" 64-66 20-21" 51-53
        7/8 27-28" 69-71 22-23" 56-58
        9/10 29-30" 74-76 24-25" 61-64
        10/11 31-32" 79-81 26-27" 66-69
        13 34-36" 86-91 28-29" 71-74
        Kids - Single Size Conversions
        UK Size
        US Size
        Euro Size
             
        5/6 6 110-116
        7/8 7/8 122-128
        9/10 10 134-140
        10/11 11 140-146
        13 13 146-154
      • O'Neills Jerseys
        Jerseys - Baby and Kids
        SIZE
        Chest inch
        Chest cm
             
        0-6 months 22-23 57-59.5
        6-12 months 23-24 59-61.5
        1-2 24-25 61-63.5
        3-4 26-27 67-69.5
        5-6 29-30 73-75.5
        7-8 31-32 79-81.5
        9-10 34-35 85-87.5
        10-11 36-37 91-93.5
        11-12 38-39 96-98.5
        Age 13 40-41 101-103.5
      • O'Neills Skorts & Shorts
        O'Neills Skorts - Kids
        Size Waist Inside Leg
        inch cm cm
        5-6 19 48 6.5
        7-8 21 52 7
        9-10 22 56 7.5
        10-11 24 60 8
        13-14 25 64 8.5

        O'Neills Shorts - Kids
        Size
        Waist
        Inside Leg
          inch cm
        1-2 16 8
        3-4 18 8
        5-6 20 8
        7-8 22 8
        9-10 24 9.5
        10-11 26 9.5
        13 28 10.5
      • Berghaus
        Berghaus - Kids Tops
        Age
        Height in
        Waist in
        Chest in
               
        3-4 38.5-41” 20.5-21” 21-22”
        5-6 43-45.5” 21.5-22” 22.5-24”
        7-8 48-50” 22-22.5” 25-26”
        9-10 52.5-55” 23-24.5” 26.5-28”
        11-12 57.5-60” 25-25.5” 29-31”
        13 62-64.5” 26-26.5” 31-34”
      • Canterbury
        Canterbury - Kids Tops
        Size
        Chest cm
        Chest in
             
        Age 6 58.5 - 61 23 - 24
        Age 8 63.5 -66 25 - 26
        Age 10 68.5 - 73.5 27 - 29
        Age 12 76 - 81.5 30 - 32
        Age 14 81.5 - 86 32 - 34
        Canterbury - Kids Bottoms & Shorts
        Size
        Waist cm
        Waist in
             
        Age 6 56 - 58.5 22 - 23
        Age 8 58.5 -61 23 - 24
        Age 10 61 - 66 24 - 26
        Age 12 66 - 71 26 - 28
        Age 14 71 - 73.5 28 - 29
      • Columbia
        Columbia - Kids Bottoms
        Size
        Waist in
        Inseam in
        Age Range
               
        XXS 21.5 18.75 5-6 Years
        XS 22 21.25 7-8 Years
        S 24.5 22 9-10 Years
        M 26.5 26 11-12 Years
        L 29.5 29 13-14 Years
        XL 31 30 15-16 Years
        Columbia - Kids Tops
        Size
        Chest in
        Waist in
        Age Range
               
        XXS 23 21.5 4-5 Years
        XS 25 22 6-7 Years
        S 26.5 23.5 8-9 Years
        M 29.5 25.5 10-11 Years
        L 32.5 27.5 12-13 Years
        XL 35.5 29.5 14-16 Years
      • Kappa
        Kappa - Kids Clothing
        UK Size
        Age
        Height
        Chest
        Waist
                 
        YS 6yrs 116cm 60cm 56cm
        YM 8yrs 128cm 64cm 58cm
        YL 10yrs 140cm 71cm 62cm
        YXL 12yrs 152cm 78cm 67cm
        Y2XL 14yrs 164cm 84cm 72cm
      • Puma
        Puma - Kids Clothing
        Age
        Height inch
        Chest inch
        Waist inch
               
        3-4 38-41 21-22 19-20
        4-5 41-43 22-23 20-21
        5-6 43-45 23-24 21-22
        6-7 45-47 24-25 22-23
        7-8 47-50 25-26 23-24
      • Speedo
        Speedo - Girls Swimwear
        Age
        Chest
        Waist
        Hips
        Speedo Size
                 
        4-5 22" 21" 23" 22
        5-6 24" 22" 25" 24
        7-8 26" 23" 27.5" 26
        9-10 28.5" 24.5" 30" 28
        11-12 30.5" 25.5" 33" 30
        13-14 33" 27" 35.5" 32
        15-16 36.5" 29" 38" 34

        Speedo - Girls 6mths-6yrs Swimwear
        Size
        Height
        Chest
             
        6-9mths 29-31" 20.5"
        9-12mths 31-33" 21"
        2yrs 36" 22"
        3yrs 39" 23"
        4yrs 43" 23.5"
        5yrs 45" 24.5"
        6yrs 47" 25"

        Speedo - Boys Swimwear
        Age
        Chest
        Waist
        Hips
        Speedo Size
                 
        4-5 21.5" 21" 23.5" 22
        5-6 23.5" 23" 25.5" 24
        7-8 25.5" 24" 27.5" 26
        9-10 28" 26" 29.5" 28
        11-12 30.5" 28" 32" 30
        13-14 33" 30" 34.5" 32
        15-16 36" 32" 37" 34

        Speedo - Junior Boys Swim Shorts
        Age
        Height
        Waist
        Speedo Size
               
        4-5yrs 41" 22 XS
        6-7yrs 46" 24" S
        8-9yrs 50.5" 26" M
        10-11yrs 55" 28" L
        12-13yrs 60" 30" XL
        13-14yrs 60" 30" XXL
        15+yrs 69" 34" XXXL

        Speedo - Boys 6mths-6yrs Swimwear
        Size
        Height
        Chest
             
        6-9mths 29-31" 19.5"
        9-12mths 31-33" 20.5"
        2yrs 36" 21"
        3yrs 39" 21.5"
        4yrs 43" 22"
        5yrs 45" 22.5"
        6yrs 47" 23"

      • Under Armour
        Under Armour - Kids Tops
        SIZE
        Chest inch
        Waist inch
        Height inch
               
        XS 25-26 22-23 48-50
        S 26-28 23-24 50-54
        M 28-30 25-26 54-59
        L 30-32 26.27 59-63
        XL 32-34 28-29 63-67
        Under Armour - Kids Bottoms
        SIZE
        Waist inch
        Hip inch
        Height inch
               
        XS 22-23 25-26 48-50
        S 23-24 26.5-28 50-54
        M 25-26 29-30.5 54-59
        L 26-27 32-33.5 59-63
        XL 28-29 35-36.5 63-67
      • Urban Beach Wetsuits
        Sharptooth Kids Shorty Wetsuit
        Age
        Height cm
        Chest cm
        Waist cm
               
        3-4yrs 100-110 55-60 50-55
        5-6yrs 115-125 60-65 55-60
        7-8yrs 130-140 65-70 60-65
        9-10yrs 145-155 70-75 65-70
        11-12yrs 160-165 75-80 70-72
        Sailfin Kids Long Wetsuit
        Age
        Height cm
        Chest cm
        Waist cm
               
        5-6yrs 115-125 60-65 55-60
        7-8yrs 130-140 65-70 60-65
        9-10yrs 145-155 70-75 65-70
        11-12yrs 160-165 75-80 70-72
    • Footwear
      • Asics
        ASICS - Kids Running Shoes
        Ireland / UK
        EU
        CM
        US
               
        9 Infants 27 17 10 Junior
        10 Junior 28.5 17.5 11 Junior
        11 Junior 30 18.5 12 Junior
        11.5 Junior 30.5 19 12.5 Junior
        12 Junior 31.5 19.5 13 Junior
        12.5 Junior 32 19.75 13.5 Junior
        13 Junior 32.5 20 1 Youth
        13.5 Junior 33 20.5 1.5 Youth
        1 Youth 33.5 21 2 Youth
        1.5 Youth 34.5 21.5 2.5 Youth
        2 Youth 35 22 3 Youth
        2.5 Youth 35.5 22.25 3.5 Youth
        3 Youth 36 22.5 4 Youth
        3.5 Youth 37 23 4.5 Youth
        4 Youth 37.5 23.5 5 Youth
        4.5 Youth 38 24 5.5 Youth
        5 Youth 39 24.5 6 Youth
        5.5 Youth 39.5 25 6.5 Youth
        6 Youth 40 25.5 7 Youth
      • Kappa
        Kappa - Kids Footwear
        UK Size
        EU Size
           
        5 Infants 22
        6 Infants 23
        7 Infants 24
        8 Infants 25
        8.5 Infants 26
        9 Infants 27
        10 Junior 28
        11 Junior 29
        12 Junior 30
        12.5 Junior 31
        13 Junior 32
        1 Junior 33
        2 Junior 34
        2.5 Junior 35
        3 Youth 36
        4 Youth 37
        5 Youth 38
      • Puma
        Puma - Kids' Footwear
        Ireland / UK
        Europe
        US
             
        2 Infants 18 3
        3 Infants 19 4
        4 Infants 20 5
        4.5 Infants 21 5.5
        5 Infants 22 6
        6 Infants 23 7
        7 Infants 24 8
        8 Infants 25 9
        8.5 Infants 26 10
        9 Infants 27 10
        10 Junior 28 11C
        11 Junior 29 12C
        12 Junior 30.5 13C
        13 Junior 32 1Y
        1 Youth 33 2Y
        2 Youth 34 3Y

      • Skechers
        Skechers - Infant Footwear
        Ireland / UK
        Europe
        US
             
        1 Infants 17 2
        2 Infants 18.5 3
        3 Infants 19.5 4
        4 Infants 20.5 5
        4.5 Infants 21 5.5
        5 Infants 21.5 6
        5.5 Infants 22 6.5
        6 Infants 22.5 7
        6.5 Infants 23 7.5
        7 Infants 24 8
        7.5 Infants 25 8.5
        8 Infants 25.5 9
        8.5 Infants 26 9.5
        9 Infants 26.5 10
        9.5 Infants 27 10.5

        Skechers - Kids Footwear
        Ireland / UK
        Europe
        US
        10 Junior 27.5 11
        10.5 Junior 28 11.5
        11 Junior 28.5 12
        11.5 Junior 29 12.5
        12 Junior 30 13
        12.5 Junior 31 13.5
        13 Junior 32 1
        13.5 Junior 33 1.5
        1 Junior 33.5 2
        1.5 Junior 34 2.5
        2 Junior 35 3
        2.5 Junior 35.5 3.5
        3 Youth 36 4
        3.5 Youth 36.5 4.5
        4 Youth 37 5
        4.5 Youth 37.5 5.5
        5 Youth 38 6
        5.5 Youth 38.5 6.5
        6 Youth 39 7

      • Under Armour
        Under Armour - Kids Footwear
        Inches
        Ireland / UK
        Euro
        US youth
               
        3 1/8 1.5 Infants 17.5 2K
        3 1/2 2.5 Infants 18.5 3K
        4 3.5 Infants 19.5 4K
        4 1/4 4.5 Infants 21 5K
        4 5/8 5.5 Infants 22 6K
        5 1/8 6.5 Infants 23.5 7K
        5 1/2 7.5 Infants 25 8K
        5 3/4 8.5 Infants 26 9K
        6 1/4 9.5 Infants 27 10K
        6 5/8 10 Junior 27.5 10.5K
        6 3/4 10.5 Junior 28 11K
        7 11 Junior 28.5 11.5K
        7 1/4 11.5 Junior 29.5 12K
        7 1/3 12 Junior 30 12.5
        7 5/8 12.5 Junior 31 13K
        7 3/4 13.5 Junior 32 1
        8 1 Junior 33 1.5
        8 1/4 1.5 Junior 33.5 2
        8 1/3 2 Junior 34 2.5
        8 5/8 2.5 Junior 35 3
        8 3/4 3 Youth 35.5 3.5
        9 3.5 Youth 36 4
        9 1/4 4 Youth 36.5 4.5
        9 1/4 4.5 Youth 37.5 5
        9 1/2 5 Youth 38 5.5
        9 1/2 5.5 Youth 38.5 6
        9 5/8 6 Youth 39 6.5

How to find your size

Use the menu above to select the relevant gender, product type and brand. The tables provide sizing information with the product size displayed on one axis and the body measurements in inches and centimetres on the other. Find the measurements in the table which best match your body measurements to identify the most suitable size.



How to measure your body for clothing sizes


1. CHEST

Hold one end of the tape measure at the fullest part of your chest or bust, using the other hand to guide it under your arms and along your back until it meets. Ensure the tape measure is flat the full way around and horizontal to the floor for an accurate measurement.


2. WAIST

Place the tape measure on the narrowest part of your waist, wrapping it around until it meets. Refrain from holding the tape measure too tight as this will result in an inaccurate measurement.


3. HIPS

Standing straight with your feet close together, locate the widest part of your hips and bottom. Place one end of the tape measure at the widest point, guiding the tape the full way around until it meets. Ensure the tape is parallel to the floor.


4. INSIDE LEG

Take your shoes off and stand with your feet flat on the ground. Place the tape measure at the top of the inner thigh and measure the distance to the ankle.


Sizing Chart
O’Neills sizing chart should be used as a guide only.
Not all garments are available in every size shown.
Measurements may vary depending on design of garment.
Please verify your postcode above to add to bag
Wishlist
815178SR
Description

Gilbert have developed a top quality pair of thermo undershorts, essential for any player in the toughest of conditions. The Atomic X Thermo II Undershorts, with a double sided fabric offering optimum thermal protection, assist with the circulation of body heat through the body with their compression fit. The Atomic X Thermo II Undershorts are made with flat lock seams, perfect for athletes constantly moving, with chafing prevention and to give the optimum comfort.

  • Composition: 92% Polyester, 8% Elastane

SKU: 815178SR

Delivery & Returns

⛟ FREE DELIVERY TO U.S. on orders over US$20

⛟ USA 1-3 days from dispatch US$14.99

⛟ CANADA 2 days from dispatch US$18.99

⛟ EUROPE next day from dispatch US$11.99-US$16.99

⛟ AUSTRALIA 3 days from dispatch US$16.99

⛟ NEW ZEALAND 2 days from dispatch US$15.99


Getting your order dispatched swiftly is of the utmost importance to us. If your order is in stock it will be dispatched to you within 1-5 working days. Please allow an additional 2-5 days for personalised and customised products (this includes all club and education items). We endeavour to dispatch your order as quickly as possible and meet these delivery timelines, however during peak periods, your order may take slightly longer. We will notify you when your order has been dispatched. Delivery costs may vary depending on the weight, destination or dimensions of the package.

Customs regulations vary from country to country. Our products are sold on a DDU (Delivery Duty Unpaid) basis. Additional taxes, fees or levies may apply according to local legislation.

Recipients of deliveries made outside the European Union may have to pay import duty or formal customs entry. If this is the case, the delivery may be delayed. O’Neills cannot offer any assistance in these processes.


Delivery to Ireland with DPD
Delivery to Northern Ireland and the UK with Royal Mail
Delivery for all orders is US$5.99 and FREE for all orders over US$64.


DELIVERY INFORMATION | RETURNS & EXCHANGES

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