Travel Backpack w/ Bottom Expansion

Quality Camping Hiking Backpack Sports Bag Outdoor Travel Backpack Trekk Mountain Climb Equipment 80L Bottom Expansion Pack 1.MULTIPLE INTERLAYER AND POCKETS:You can storage your things in different interlayer and pocket,it\\\'s easy for you to get your small things like keys,cards or socks,don\\\'t need to go deep,And there is an individual interlayer for laptop storage which can hold size below 15.6 inch   2.DUAL WATERPROOF DESIGN:The backpack is made of imported scratch-resistant and water-resistant nylon fabric,Don\\\'t worry the water will wet your clothes and other things.   3. The bearing system is detachable,this bearing system can handle the pack weight and spread the burden to body other position and keep your back from being sweated so to protect you back and shoulder, you will not feel very tired under heavy weight and long trip,but this bearing system will occupy some backpack area about 10 Liter after been fixed because it has mesh suspension system, if you detach it you