Samsonite Business Ladies Rolling Laptop Bag Inline skate wheels - Are constructed of polyurethane with ball bearings to minimize frictional resistance, offer durability and reduced resistance for smooth rolling. Push button handle - Locks when fully extended so you can push or pull your case. The handle also locks when fully recessed, greatly reducing the risk of damage when not in use. Laptop compartment - Is a built-in padded compartment designed to carry your laptop computer and help protect it from shocks while traveling.