The BAKFlip FiberMax Tonneau Cover has all of the great good looks and functionality of the BAKFlip but the cover's outer surfaces are Fiberglass Reinforced Polymer (FRP)! FRP (Fiberglass Reinforced Polymer) provides unparalleled impact resistance while the aluminum surfaces underside the cover ensures absolute structural integrity! It has superior impact resistance, stays cool to the touch panels with 2 year factory warranty. *Reinforced Fiberglass Panels - Standard Grade *300 lb Weight Capacity (evenly distributed) *Full Access to Truck Bed and Stake Hole Pockets *Easy No Drill Installation *Lock Tailgate to Secure