8.5 ounce, 59% cotton/39% polyester/2% spandex canvas with Rain Defender durable water repellent. Rugged Flex durable stretch technologyfor ease of movement. Relaxed seat and thigh. Comfortable gussetted crotch. Durable Carstrong full chap front and back half of leg for extra durability. Stringer sewn on seam belt loops. Right leg secured cell phone pocket. Straight leg opening.