Universal Lightweight Outdoor Backpack Dayback for Hiking Camping Travel Waterproof,20L/50L 1. 100% Satisfaction Guaranteed Backpack, 50L hiking backpack for outdoor sports with comfortable straps and air ventilation system, a must have on every trip. 2. DURABLE: This Hiking Backpack is made with high quality waterproof and tear resistant material, supply with water-proof rain cover in zippered compartment on the underside of the bag, always keep your stuff dry. 3. COMFORTABLE: Breathable mesh shoulder straps with plentiful sponge padding help relieve the stress from your shoulder. The length of the shoulder straps is adjustable. The chest strap with a whistle buckle help you lock your backpack in place securely. 4. SUPER SPACIOUS: A true space saver, 23" tall, 14.5" wide, and 8.7" deep, The main compartment provide enough room (50L liters) no matter if it's a day trip or a week long journey, Two separators in the main compartment are convenient enough to help you further organize things, and allows for secure storage of laptop up to 15.6". 5. What You Get: Outdoor hiking backpack 50L, Waterproof Cover, lifetime warranty-Exchange, return, whatever it takes, and friendly customer service.