Pearl iZUMi Men's Infinity Knicker 82% Polyester/ 18% Spandex: Front 69% Nylon /16% Polyester/ 15% Lycra: Rear Imported Elite Thermal Lite provides superior moisture transfer and warmth 16 in. lower leg zipper Elasticized waistband with drawcord Two zippered hand pockets Reflective elements for low-light visibility 32 in. inseam [size medium]