NIKE Womens Running Shorts 88% Polyester/12% Spandex Machine Washable Quick drying running shorts. Dri-Fit material wicks away sweat, keeping you cool and dry Fabric composition: 88% Polyester/12% Spandex. Waistband Fabric: 86% Polyester/14% Spandex. Built in briefs with lined gusset increases support for secure coverage and comfort Ventilated hem ensures breathability for cool, dry performance Wide contrast waistband provides a secure fit. 4" inseam.