Athalon 21" Double Decker With Detachable Duffel, Graffiti, One Size Top Unzips From Bottom Section To Become A Duffel With Hidden Backpack Straps Bottom wheeling section expands an extra three inches Over/under section separates boots, equipment and laundry from the main section Sealed ball-bearing in-line skate wheels Hidden, Telescoping Pull-Out Handle