Nike Men's 7" Phenom 2 in 1 Running Shorts 683279 100% Polyester This lightweight and breathable running short is designed with a built in compression liner. Zipper pocket on back to hold keys, ipod, etc. Style: Phenom 2 in 1 Short - 7" inseam Vented sides for added breathability Fabric: 86% Polyester/14% Spandex Nike's Dri-FIT technology wicks moisture away from the skin and quickly evaporates it to the surface. You're sure to stay cool and comfortable in this breathable running short.