The Endorphin 2" Split Short features a lightweight stretch fabric, and provides great moisture management and excellent comfort. With anti-microbial treatment to help eliminate odor, this running gear keeps you at your best. Specs ? 2" Inseam (size M) ? 4-way stretch fabric ? Waterproof zippered back pocket ? Elastic waistband with internal drawstring ? Anti-microbial treatment on liner to help eliminate odor ? Reflective elements ? Fabric Breakdown: Stretch UltraSilk 2.0 (83% Polyester, 17% Spandex), Jersey Liner (87% Polyester, 13% Spandex), Mesh Liner