Polyester.
Solo Pro CheckFast(tm) Backpack - Black The Solo Pro CheckFast(tm) backpack showcases a CheckFast(tm) design that allows you to pass through airport security faster. It features a removable padded compartment that will protect a laptop up to 16-inches, an MP3 pocket with a pass through head phone port, a side accessory pocket, an interior organizer section, padded carry handles, and an adjustable shoulder strap. Dimensions: 18H x 13W x 7D..