Marker 21-Inch Carry On Wheeling Duffel (Charcoal) Convenient 21-Inch size is perfet for carry on luggage Over/under section holds a pair of ski boots, and separates bottom contents from items in the main section Hidden pull out telescoping handle allows for effortless movenent. Sealed ball bearing in-line skate wheels Bottom runners allow bag to slide easily and give extra protection Adjustable cinch straps with signature Marker buckles