VIOJI 1pc Black Vinyl Clamp On Soft Roll-up Top Mount Tonneau Cover w/ Rails+Necessary Mounting Hardware Fit 07-13 Chevy Silverado GMC Sierra New Body Style Pickup w/ 5'8" Short Bed Fit: 07-13 Chevy Silverado/GMC Sierra New Body Style Pickup With 5'8" Fleetside Bed Only (Except 2007 Classic Body) 1pc Tonneau Cover+Rails+Necessary Mounting Hardware (Please Check The Picture On The Left To See The Installation Instruction In Case It Does Not Come With The Package) Black Soft Roll-up Tonneau Cover (Cross Bars Are Connected With The Tarp That Will Roll-up Together With The Cover) Made From Tear-resistant Double Sided The Highest Standard In The Industry 24oz Vinyl Which Withstands Any Tough Climate Or Weather And Protects Cargo; Frame: Aluminum This Is A Top-mount Design Cover Which Means The Cover Sits On Top of The Bed Rails For Improved Water Runoff And Minimal Bed Space Intrusion.