Alpinestars Commuter Backpack , Color: Black 61075010 Constructed with water-resistant 840D ballistic nylon twill and 420D honeycomb nylon with abrasion-resistant fabric at the base of the pack Self-locking waterproof zipper on main compartment Waterproof welded zipper with printed logo on front compartment Laptop compartment, audio port, internal organizers and external side pocket storage Sternum strap and hideaway waist strap