UnderCool Unisex Sizing Guide

Size Waist Length
Extra Small 24" - 28" 61 cm - 71 cm 15" 38 cm
Small 26" - 30" 66 cm - 76 cm 16" 41 cm
Medium 28" - 32" 71 cm - 81 cm 17" 43 cm
Large 32" - 38" 81 cm - 96 cm 19" 48 cm
Extra Large 40" - 45" 101 cm - 114 cm 19" 48 cm

Quick Reference 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.)