Product DNA What's It Do? Our UA Prototype collection was built with the next generation of athletes in mind—the ones who never slow down. Everything's light, durable and ready to go to work anywhere. The Fundamentals Loose: Fuller cut for complete comfort Smooth, lightweight, fast-drying fabric for superior performance Material wicks sweat & dries really fast Encased elastic waistband with external drawcord Mesh hand pockets Inside leg: YMD 21 cm (+/- 4 cm per size) 100% Polyester