Bestop designed the ZipRail Soft Tonneau Cover for ease of installation and use, and to stand up to every climate or weather condition. It has the lowest height profile of any Bestop tonneau so it looks sleek and smooth. ZipRail Soft Tonneau features no-drill, bolt-on clamp system and bed rails with the Bestop original BeltRail channel attachment system. The tonneau seals into the bed rails for a full perimeter closure at the sides, front and back. Dual pull tabs at either rear corner make roll-up super easy 100 percent access to the bed.