DualLiner Truck Bed Liner 2004-2007(CLASSIC) Chevy Silverado/GMC Sierra with 5 ft.8 in. bed, Model GMF0458 100% Made in the U.S.A Hard sidewalls for superior dent protection 3/8in.-thick ZeroSkid floor keeps cargo where you put it REAL 100% Lifetime Warranty FITS 2004-2007 (Classic) Chevy Silverado/GMC Sierra with 5'8" Bed