Description Elastic closure,Elastic waistband with internal drawcord for a perfect fit. BUY ONE GET TWO: 2 in 1 Design- 5 inch inseam outer running shorts with zipper pockets, Inner compression underwear for thigh muscle support. 100% Polyester; 87% Polyester, 13% Elastane Mens Running Shorts Gym Workout Athletic Training Compression Underwear Liner With Zipper Pocket