Oakley 20L Street Backpack 600D 92/8 polyester/polyurethane. 70D ripstop nylon lining. Padded internal laptop and tablet sleeves. Padded shoulder straps and back panel with mesh inserts. Sternum strap. Two external zipper pockets. Compression straps. 12 1/2 W x 17 H x 6 1/4 D