8-ounce, 98% cotton/2% spandex canvas. Rugged Flex durable stretch technology for ease of movement. Adjustable front-elstic suspenders. Bib pocket with zipper closure. Two additional storage pockets; one with pen stall. Zipper fly. Two large lower-front ledge pockets. Right leg hammer loop. Right leg secure cell phone pockets. Long-wearing chap-style double-front construction with cleanout bottoms that can accommodate knee pads. Two reinforced back pockets. Full circumference kick panel. Triple-stitched main seams. Metal rivets at vital stress points.