The North Face Vault Backpack Asphalt Grey/Zinc Grey OS Fabric:600D polyester, 300D mini-ripstop, 1200D polyester Dimensions:19 x 13x 8 FlexVent injection-molded shoulder straps with a top layer of Atilon foam for added support Exterior key/accessory clip Design endorsed by the American Chiropractic Association for stellar fit, comfort and usability