ZERO Air II, lighter than air. In addition to being extremely lightweight, ZERO Air II uses thge most up to date technology to create a more comfortable traveling experience. Durable wheels glide efortlessly and silnetly. A retractable 3-stage handle features a comfort grip and adjustable height to increase maneueverability and reduce stress on the traveler. Designed with the determination to fuse m,inimum weight and macimum durability.