Highly Breathable with front zip polo neck Non Pilling  70% Dacron 30% Polyestor Comfort Seams Fast Drying Extremely Comfortable To Wear As A Base Layer Light Weight High Quality Base Layer that is Wickable & Breathable. Made From a Microfibre That Wicks Mositure Away From Your Skin To Help Regulate Your Body Temperature. This Microfibre Works As Well In The Summer As It Does In The Winter.