Waist sizing; XS=27-30", S=29-33", M=31-35", L=33-37", XL=35-39", XXL=39-44", 3XL=45-49". Thigh: XS=23.5", S=24.5", M=25.5", L=26.5", XL=27.5", XXL=29.5", 3XL=32". Featuring a quick-drying shell and 2-in-1 liner, you’ll be comfortable no matter where the waves take you.