Cordura nylon outer shell. Back wall padded for comfort; padded flap has knit lining. Fits most standard 9mm, .40 and single row .45 and 10mm magazines. Also ideal for carrying large folding knife or police type automatic knives. Rounded flap has Velcro closure. Belt loop fits belts up to 2 1/4 for vertical carry; up to 1 1/2 for horizontal carry.