This business laptop backpack is made of high density and high quality 300D Oxford fabric with smooth zipper, which is durable, waterproof and wear-resistant. And it can protect the contents of the bag when in the rain. External USB port design, anytime anywhere charging. Measuring 16.1'' x 11.8'' x 5.1'', the large main compartment with multiple pockets outside to hold everything you need. Breathable and adjustable shoulder straps relieve the stress of the shoulder. Foam padded top handle for a long time carry on. Please noted that this backpack doesn't power itself, usb charging port only offers an easy access to charge. The price includes sea freight cost if you order over 500 pcs. Silk screen and heat transfer are available to print on the front of the backpack. Pls order today !