Purjoy 15.6Inch Laptop Backpack,Large Capacity Backpack,Multi-functional Practical Business/Casual Backpack Dimensions:12"Lx20"Hx6"W Capacity:30L(fits Most 15"Laptop.) COMFORT --- A built-in padded compartment designed to fit laptop up to 15",the back padded compartment makes the gravity point(mostly the heaviest part - the laptop) right against your back,then coordinate with ergonomically contoured shoulder straps to provide great comfort and maximum back support while traveli.Multi-panel Airflow Design provides extra padding for comfort and maximum back support. DURABILITY - Made of high density 1500D ballistic nylon backed with thick waterproof material for long lasting rugged use.The lining of the bag is water resisted,so it's not easy to get wet. Structure:A total of 7 pockets.1 main zipper Pocket,4 front zip pockets and 2 laptop sleeve.There are several small pockets in the second front zip pocket for your cell phone and wallet. LOTS OF POCKETS - main compartment designed with zippered pocket for passport or wallet and one smaller compartment to fit tablet;Front main pocket with organization panel for pens,name cards etc.;Quick access pocket with a detachable key fob; Side zippered pockets with elastic strap for water bottle,umbrellas etc.;Headphone port included.