Briggs & Riley BRX Luggage Exchange Rolling Backpack, Slate, One Size Zip-down back panel conceals wheels keeps dirt and moisture off your back and provides access to the padded backpack harness with waist straps and lumbar support panel Adjustable sternum strap keeps the backpack straps from sliding off and reduces strain on arms neck and shoulders Unique zipper and velcro opening allows you to access the bag from the top in backpack mode or it can be laid flat for packing like a traditional suitcase Padded interior pockets cradle a laptop and a tablet computer Meets carry-on regulations for us domestic and international airlines