OGIO Bullion Customzied Backpacks, White Black Silver color_Port Authority_BG601 9 ounce 90 10 nylon spandex shell bonded Color:Black Ink 9 ounce 90 10 nylon spandex shell bonded to a water resistant film insert and a 100% polyester fleece backing Rain Defender durable water repellent Wind Fighter technology tames wind Rugged Flex technology for ease of movement Reverse coil center front zipper with chin guard Zip through cadet collar Left chest pocket with reverse coil zipper Zippered hand pockets Interior pockets: large document pocket with hook and loop closure and two open pockets Hook and loop adjustable cuffs Adjustable drawcord drop tail hem Carhartt strong triple stitched main seams Carhartt label sewn on chest pocket ** 5 ounce 100% cotton Double needle stitching throughout Traditional relaxed look Open collar Horn tone buttons Button through sleeve plackets Adjustable cuffs Shirttail hem Due to special finishing process colors may vary 31 L Weight: 1 this pack opens wide to take on a laptop