Thick Skin is a lightweight, tight fitting rash guard. Made with a 4-way stretch, 57% polyester, 31% poly/bamboo fiber and 12% spandex blend. The material is soft, stretchy and wicks exceptionally well. Worn for warmer weather paddling or as a base layer all year. Flat seam construction to prevent chaffing and high neck to prevent sunburn. Wind and abrasion resistant. UPF rating: 73.