8.5-ounce, 60% cotton/40% polyester canvas. 30% lighter and ounce-for-ounce as durable as sandstone. Nylon lining quilted to 80-gram 3M™ Thinsulate™ Insulation in body and sleeves. Two inside pockets. Inner-sleeve, rib-knit storm cuffs. Rain Defender® durable water-repellent finish.