8-ounce, 98% cotton/2%spandex. Rugged Flex durable stretch technology for ease of movement. Comfortable gusseted crotch. Double-front with cleanout openings that accommodates knee pads. Reinforced front slash pockets. Stronger sewn-on-seam belt lops. Right leg, secured cell phone pocket. Left leg utility pocket. Hidden back zipper pocket. Straight leg opening.