Granite Gear Campus Superior Backpack Fabric Imported zipper closure Repel weave fabric with taurpalite bottom for maximum protection against elements, ergonomic maxload multi-compartment design, barrier zipper tricot lined pocket for valuables. B breathable load absorbing shoulder harness, load stabilizing sternum strap, hide-away load stabilizing waist belt, ergonomic raised foam back panel with lumbar support. Tricot-Lined Padded computer Compartment fits most 17" Laptops, Interior Tricot Lined Tablet Sleeve, Expandable Hydration Pockets, Lash Strap for Easy Attachment.