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The One | Hello Swim - Size Guide


All measurements in inches
Size NZ/AU Size US Size Chest Waist Hip Leg Body Length
S 6 - 8 2 - 4 26–27.56 23 ⅝–25 ⅝ 31 ½–33 ½ 14 ⅛–15 26–26 ¾
M 10 - 12 6 - 8 27.56–29 ⅛ 25 ⅝–27.56 33 ½–35.43 15–15 ¾ 26.57–27 ⅜
L 14 10 29 ⅛–30 ¾ 27.56–29 ½ 35.43–37 ⅜ 15 ¾–16 ½ 27 ⅛–28
XL 16 12 30 ¾–32 ¼ 31 ½–33 ½ 37 ⅜–39 ⅜ 16 ½–17 ⅓ 27 ¾–28 ½
All measurements in centimetres
Size NZ/AU Size US Size Chest Waist Hip Leg Body Length
S 6 - 8 2 - 4 66.0–70.0 60.0–65.1 80.0–85.1 35.9–38.1 66.0–67.9
M 10 - 12 6 - 8 70.0–74.0 65.1–70.0 85.1–90.0 38.1–40.0 67.5–69.5
L 14 10 74.0–78.1 70.0–74.9 90.0–94.9 40.0–41.9 68.9–71.1
XL 16 12 78.1–81.9 80.0–85.1 94.9–100.0 41.9–44.0 70.5–72.4

How to Measure

We want your Hello Swim to fit just right. A firm fit ensures zero leaks!

  • Chest: Measure across the fullest part of your bust and straight around the back.
  • Waist: Measure the narrowest part of your waist, below the ribcage and above your hip bone.
  • Hip: Measure the fullest part of your hip, making sure the tape measure is straight.
  • Leg Opening: Measure at the top part of your inner thigh around the top edge of your leg.