Bestop 18212-01 ZipRail Tonneau Cover for 2007-2013 Chevy Silverado/GMC Sierra Crew Cab (won't fit classic body style; w/o bed management system), 5.8' bed Attaches with Bestop's original Belt-Rail system for peel-back closure New integrated bows for sleek appearance and much faster installation No-drill clamp system for secure mounting more tools Premium grade leather-grain vinyl coated polyester withstands weather with mildew and UV resistance 100% access to bed when rolled up