Ultra-lightweight – Train in complete comfort with the UA sports shorts. Made from ultra-lightweight, breathable but extremely durable fabric. Sweat-wicking – Stay cool, dry, and push yourself further. The men's running shorts have sweat-wicking material that dries really fast. 100% Polyester Machine Wash Fastening: Pull On Shorts 1370388/1377139 Elastic waistband – Take on workouts in comfort. The training shorts have an encased elastic waistband with an internal drawcord for extra movement. Train harder – These men's athletic shorts make the perfect set of warm-ups and are designed to go the distance in any sport. Material and fit – UA Woven Graphic Shorts, comfortable men's workout shorts, material: 100% polyester.