Gatortrax Retractable (fits) 2007-2013 Chevy Silverado GMC Sierra 6.5 Foot Bed Only Gloss Truck Bed Tonneau Cover (G10422) Made in The USA Constructed of polycarbonate slats the same stuff that is used in fighter jet cockpits. Can hold 300 lbs evenly distribuated. Backed by Gator for Limited Lifetime. Made in the USA Slides on maintenance free sealed ball bearings Lockable with a key and can be locked in any position The 11"x11" canister is compact and allows for maximum bed usage.