UnderCool Unisex Sizing Guide

Size Waist
Extra Small 24" - 28" 61 cm - 71 cm
Small 28" - 32" 71 cm - 81 cm
Medium 34" - 38" 86 cm - 97 cm
Large 40" - 46" 102 cm - 116 cm
Extra Large 48" - 52" 121 cm - 132 cm

*Waist Measurement: If you bend to the side, you will crease in the middle of your body; this is your natural waist. That's where you want to take your waist measurement.

Womens Sizing Guide: 

Please note sizing is dependent on waist size not bust size.

Unisex Sizing Guide:

ThermApparel recommends ordering a size smaller than your usual T-shirt size.
(If you wear a large T-shirt, a medium UnderCool will fit best.)