Material 1: 100% polyester 2 Material: 96% polyester, 4% spandexFunctional underwear shirt from Swede Mount. Effective moisture transport and high breathability makes this underwear sweater optimal for aktiviktet and training. Amazingly stretchy fabric that provide both comfort and maximum freedom of movement. Flat seams to prevent chafing and discomfort. Perfect for ski holidays and all the winter activities!