The HardFold has been designed with an extremely tough all aluminum underbody frame covered with our highest marine grade vinyl on top. This impact resistant cover offers maximum security with the ease of installation and operation. When needing to open, simply unclamp the EZ lock handles and fold the cover forward. The nylon straps hold the cover in the open position when you need to haul your cargo. This cover comes completely assembled '" NO DRILLING! Installation time is less than 10 minutes. As with all of our Tonno Pro covers, we are offering a limited lifetime warranty on the aluminum sub-frame and an industry best 10 warranty on the vinyl.