Buy from Amazon : br br Tenba Discovery 637-331 Large Photo Daypack - BlackGray br br Tough water-repellant nylon exterior Extraordinarily lightweight construction weighs only 26 poundsHeavy-duty self-healing zippers Compression straps secure and stabilize the load Large elasticized micromesh pockets hold water bottle gloves etc br Padded rear pocket fits most laptops up to 15 inches br Waterproof bottom panel keeps the bag protected if you have to put it down on a wet surface