prAna Men's Flex Short Recycled Polyester 87% / Spandex 13% Imported Multi-sport short, great for hiking, running, and training Lightweight stretch recycled polyester shell; DWR coated (Durable Water Resistent) Built in Coolmax cycling short style liner Side stash pocket, elastic waist with internal drawcord Medium : 9" inseam; 87% Recycled Polyester, 13% Spandex