Four-way stretch polyester; 90% polyester, 10% spandex fabric; Water resistant treatment; Blood resistant finish; Articulated knee; Grip strip inner waistband; Diamond crotch; Reinforced bottom hand pocket (for knife clip); Streamlined snap close cargo pockets; Extra thigh zipper pocket; Flap over back pockets; Snap loop (roll up pant leg); Product weight: 18.7 oz.