6.8 oz 94% polyester / 6% spandex interlock. Mic/sunglass clip. Gusseted breathable mesh underarm. Two-channel pen pocket. Mic clip on shoulders. Hidden collar buttons. Advanced, moisture-wicking fabric dries 125% faster than cotton, 30% faster than traditional polyester. Fade-, shrink- and wrinkle-resistant. Imported. 94% Polyester, 6% Spandex.