Featherweight Deltapeak mesh maintains breathable, quick-drying comfort at any distance in a running shirt that performs on its own or as a base layer. It resists odors and offers enhanced sun protection to keep you going even as the temperatures peak. 28" length (size Medium) Crewneck Short sleeves Antimicrobial fabric engineered to inhibit the growth of odor-causing germs 100% polyester Machine wash, tumble dry Made in Canada