Rolling Backpack: Convertible wheeled backpack offers the load carrying ability of a rolling bag with wheels and the portability of a school backpack. For adults and kids age 8 and up Large Capacity: Main compartment holds 2 big text books, a laptop, lunch and many small items. Measures 18 x 13 x 9 inches. Use as underseat carry on luggage when travelling Organize: Front pocket organizer has a key clip, pen holders, card slots, and an internal zip pocket for keeping small items safe. Includes 2 mesh side pockets for water bottles Rubber Base: Molded rubber bottom holds up to the punishment of dragging sideways and backwards on pavement. No more holes in the bottom of your kids rolling backpack! Durable: Made of durable ripstop polyester fabric with a metal frame and reinforced edges, this backpack with wheels has a water resistant coating to keep your gear dry