You're just looking at a backpack that's smart every step of the way. The bottom is made of solid material that does not wear off and is great to keep clean. We also thought about your back and we made the padding really comfortable so that your back is pampered. And the rollback? It's elaborate like never before! It's easy to scroll, nothing falls out, and even if you roll it just once, it will look great.A versatile backpack for every occasionPadded backOuter rubber for mounting on the trunkLarge interior space