Material nylon polyester cotton ripstop All seams: nylon thread Metal button and YKK zippers As expected there are also good sized cargo pockets,besides pockets some other nice core features include: double layer seat /knee areas for durability, a rugged metal YKK zipper is used for the fly, knees are slightly articulated, and a simple strap system in built into the waist to allow for size adjustments. If looking for a durable pair of pants that are very feature rich, these Pants are certainly worth looking into.Pls check below Size Chart to ensure proper fit, the size details in Photo and Product Description. Size Chart: S : waist 28''-32", Inseam 29''-32". M : waist 33''-35", Inseam 29''-32". L : waist 36''-39", Inseam 29''-32". XL: waist 40''-43", Inseam 29''-32".