Gator SR1 Roll-Up (fits) 2004-2007 Chevy Silverado GMC Sierra 5.8 FT Bed Only Soft Roll Up Tonneau Truck Bed Cover (55103) Made in the USA Gator's Premium Roll Up Tonneau Cover Constructed from commercial grade marine vinyl Mounts on top of bed caps for superior seal and rain protection Spring loaded tension keeps cover at proper tension in all climates Five Year Warranty and Proudly Made in the USA Instant Upgrade from your standard Roll Up Cover. The SR1 has everything you&#039;re looking for in a Roll-Up Tonneau Cover. Rolls up completely to allow full truck bed access when needed. The included straps allow you to drive down the road with the cover secured. Constructed from Commercial Grade Vinyl that is Tear Resistant. Weather Seals keeps in the Bed Dry Support cross bars add extra strength against snow and ice. Uses a Heavy Duty Aluminum Frame The SR1 has easy to use latches that secures the cover on both sides of the bed. Automatic Spring Loaded Tension keeps the cover looking tight and nice in all climates. Mounts on top of bed caps for superior seal