The North Face Hot Shot Backpack Zinc Grey Heather/Asphalt Grey OS Fabric:420D nylon, 600D polyester print, 1680D ballistics nylon Backpack Dimensions:20 x 12.5 x 8 Laptop Sleeve:14.75" x 10" x 1.75" FlexVent injection-molded shoulder straps with a top layer of Atilon foam for added support and bottom layer of PE foam for added comfort Design endorsed by the American Chiropractic Association for stellar fit, comfort and usability