Wheeled trolley school backckpack Plenty of room,Easy to use Can carry heavy books at school Your logo can be imprinted on it Black ... wheeled backpack, Rolling Backpack , - Wheeled Travel Bag or School Trolley Bags,Two Exterior Pockets and a Mesh Water Bottle Pocket, Super ... 6",this is a large easy-to-use backpack for school, overnights, and travel. Customized Design,Logo,Color,Size are warm ...