Skyway Luggage ProLine 21.5'' Skytrack Vertical Carry-On Case 42381,Black,One Size 21.5-inch x 14-inch x 10-inch Weighs 10 pounds Zero gravity brand frame is fully flexible and lighter and stronger than conventional frame construction Durable automotive style wheel system mounted at the outside corners of the case for superior stability and smoother operation over a variety of surfaces Ergonomic handles lock into two different heights