Come and Check Our Promo Solutions.This laptop backpack is made of durable oxford cloth , inner shockproof belt for fastening your laptop and pad, preventing them from sliding and bumping. Removable USB charging line, connect power bank and electronic devices while walking. Please note that this backpack doesn't power itself, USB charging port only offers an easy access to charge. When clean backpack, remove the USB charging line. Perfect for weekend getaways, shopping, office work, business traveling and other outdoor activities. Pls check inventory and detailed info with us before placing your orders.