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 inch2.DUAL WATERPROOF DESIGN:The backpack is made of ed 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 will see its real capacity and use the backpack as a daily use or travelling pack.4. High quality profeional backpack for camping, hiking and backpacking, functionally versatile. Main compartment with divider, bladder compartment with hydration acce, hip-belt pockets, front pockets and side pockets to keep your stuff separate and organized.Made by high quality waterproof nylon.Size: 52cm x 33cm x 20cm / 21''x13.2''x8'' inchWeight:No Waist guard 530g,Waist guard 630g