Delsey Luggage Illusion Spinner 4 Piece Set, Black, One Size Four multidirectional spinner wheels assure smooth maneuverability and stability Main material is durable polyester with eva foam backing Trolley e.x.p.a.n.d up to 2 inches to allow for additional packing space Fully lined with tie down straps to keep clothing secure Recessed locking trolley handle with easy access push button to lock and release one hand operation