Come and Check Our Branding Solutions.This large backpack made of waterproof nylon fabric. Built in USB port to offers you a more convenient way to charge your phone while walking. Not only is a perfect college high school student backpack, It is also kind of unisex storage bag,both ok for men and women's pouch. With a suitable size,easy for handling or put in the luggage case.Fit for business, short trip ,weekend getaways, shopping, professional office work,leisure, hiking, camping ,overnight stay and other outdoor activities. Customized is available. Pls check inventory and detailed info before placing your orders.