The Retrax PRO retractable truck bed cover is part of our Premium Aluminum Series covers. The Premium Aluminum Series covers are constructed from industrial strength aluminum slats. They provide unsurpassed strength and ruggedness. The Retrax PRO not only provides rugged protection for your truck bed it also provides a patented low-profile design. That design enhances the appearance of your truck. The compact storage container features a unique spiral track system that prevents the cover from coming into contact with itself as it opens and closes. The operation of this cover allows it to always stay flush to the rails. It also creates a dependable seal to help keep the elements out and protect your cargo. The Retrax PRO has a sealed ball-bearing roller system that glides effortlessly along the rail. With a convenient handle that eliminates the need for pull straps, Velcro, snaps or springs. The Retrax PRO is key lockable in any position that gives you unlimited flexibility in your hauling capacity.