Net Structure For Extra Ventilation Highly Breathable Comfort Seams Available in White or Grey Fast Drying Extremely Comfortable To Wear As A Base Layer Light Weight 70% Dacron 30% Cotton High Quality Ladies 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.