The UA Microthread fabric dries faster, does not stick to the skin, does not rub and is flexible without absorbing sweat. The 4-Way Stretch technology allows for better movement in every direction. The material wicks away sweat and dries very quickly. UPF 50+ protects the skin from the sun's harmful rays. Ribbed knit collar and sleeve cuffs with 1-button closure. Side hem with ventilation.