NIKE Pro Womens Dri-Fit Hypercool Bike Short Fabric: Body: Dri-FIT 80% polyester/20% spandex. Gusset lining: Dri-FIT 100% polyester. Imported 7" inseam based on size medium Nike Pro Cool fabric keeps you cool when the action heats up Side seams trace your natural shape for optimal movement Dri-FIT fabric helps keep you dry and comfortable Elastic waistband for a snug, comfortable fit