Protect your valuable cargo with the Protect your valuable cargo with the Revolver X4s Tonneau Cover from BAK®. With several upgrades and new features, the latest iteration of BAK’s highly popular Revolver X4s improves upon an already effective design. While still constructed from durable marine-grade vinyl stretched atop heavy-duty, interlocking aluminum slats, the new BAK X4s features full matte-black styling that extends to all other components. These include the cover's mounting brackets, clamps, hardware, and the undersides of the aluminum slats. Whether open or closed, the Revolver X4s is stealthier than ever.Revolver X4s Tonneau Cover from BAK®. With several upgrades and new features, the latest iteration of BAK’s highly popular Revolver X4s improves upon an already effective design.