High Quality Rolling Backpack: Rolling backpack with smooth rollers can slide freely on the ground. The thick molded bottom and sturdy kickstand ensure that the wheeled backpack stands in balance. Rolling Bookbag Size: Roller backpack 21*12.5*6(L*W*H), lunch box (shoulder straps are removable), pen case. Multi-piece storage, can be used as a roller backpack for college and travel. Large Capacity: The rolling backpack for boys has 2 large independent compartments for laptops, ipad, books, and 3 front zippered pockets for tissues, keys, computer hard drive, etc. Multifunctional Wheels Backpack: The backpack with wheels weighs only 3.5 pounds. It can be pulled and backed, providing different ways of carrying when you are under different needs. Backpack With Wheels Material: The backpack on wheels made of high quality water resistant material. Sturdy smooth zipper and reinforced thread stitching at the joints. Make it more durable.