Size Guide

Sports Bras / Tops

Use your underbust measurement to find your ideal 100%LIFE fit.

Sizing Suggestion:
If you’re between sizes, sizing up offers a softer, more relaxed fit, while sizing down provides a snug, more supportive feel. Listen to your body—comfort looks different for everyone.
Size S US 4 M US 6 L US 8 XL US 10
Under-bust 27–28" 68.5–71.1 cm 29–30" 73.7–76.2 cm 31–32" 78.7–81.3 cm 33–34" 83.8–86.4 cm
Band Size Reference 32–34 e.g. 32B / 34A 34–36 e.g. 34B / 36A 36–38 e.g. 36B / 38A 38–40 e.g. 38B / 40A

Leggings / Bottoms

Use your hip measurement to find your ideal 100%LIFE fit.

If you’re between sizes:
Size up if: You prefer a relaxed fit, are curvier around the hips, or choose a brighter colour and want to avoid over-stretching.
Size down if: You prefer compressive support or a more sculpted, body-shaping fit.
Size S US 4 M US 6 L US 8 XL US 10
Waist 25" 63.5 cm 27" 68.6 cm 29" 73.7 cm 31" 78.7 cm
Hip 34–36" 86.4–91.4 cm 36–38" 91.4–96.5 cm 38–40" 96.5–101.6 cm 40–42" 101.6–106.7 cm
How to Measure 

Use a measuring tape to find your size. If you don’t have one, use a piece of string or ribbon and measure it against a ruler. Keep the tape slightly loose and parallel to the floor.

  • Under bust: Measure around your body directly beneath your bust, where the bra band sits.
  • Waist: Measure around the narrowest part of your waist, above your hip bones and below your rib cage.
  • Hip: Measure around the fullest part of your hips and buttocks, keeping the tape parallel to the floor.