Bestop 17209-01 EZ Roll Truck Tonneau Cover for Chevy Silverado/GMC Sierra Crewcab, 5.8' Bed, (Classic body style only), 2004-2007 Leather-grain premium vinyl/polyester fabric stays flexible in cold weather, features limited lifetime warranty No-drill install with variable-position clamp system and Hook-N-Loop rail closure for tight seal around bed perimeter Aluminum bows are integrated into the structure so they roll up with the fabric Easy access to truck bed and cargo by simply dropping tailgate; or completely roll up cover for 100% access to bed Limited Lifetime Warranty