92% Polyester, 8% Spandex Made in the USA Drawstring closure REDEFINING PERFORMANCE APPAREL: New from Road Runner Sports, KORSA is the best performance apparel we've ever made. We designed this all-new, premium apparel line using the latest fabric technology out there. VERSATILITY & COMFORT: Our KORSA Challenge shorts are made to run everywhere, with a 4-way stretch woven fabric for maximum mobility and range of motion. Made from an ultralight fabric that's sweat-wicking, and wrinkle resistant. CUSTOM FIT: Includes an internal elastic waistband and has an external drawcord to adjust for a perfect fit. Along with two front zipper pockets and two back pockets to secure your personal items. LIGHTWEIGHT & LINER FREE: No built-in liner for freedom of movement and potential for layering. Our ultralight shorts have a 5-inch inseam that falls to the upper mid-thigh. PERFECT FIT PROMISE: As runners and fitness fanatics ourselves, we hold our performance apparel to a higher standard. If you ever feel that one of our products does not meet that standard, contact us and we'll make it right.