Tenba Discovery Large Photo Daypack - Black/Gray (637-331) Tough, water-repellant nylon exterior Extraordinarily lightweight construction (weighs only 2.6 pounds)Heavy-duty, self-healing zippers Compression straps secure and stabilize the load Large elasticized micromesh pockets hold water bottle, gloves, etc. Padded rear pocket fits most laptops up to 15 inches Waterproof bottom panel keeps the bag protected if you have to put it down on a wet surface