The BAKFlip MX4 Tonneau Cover is constructed entirely from alloy materials, including heavy-duty aluminum top panels and side rails. Unlike comparable soft-folding tonneau covers, you can't simply slice through the MX4 with a pocket knife. No matter the cargo in the bed, you can rest assured that your gear's protected by a premium bed cover from BAK industries. Not only is the MX4 durable, but it's also sleek and stylish. Unlike competitors, the BAKFlip MX4 Tonneau Cover sits flush with your pickup's bed rails, disappearing into your truck's profile. And with a sleek, matte black finish on all surfaces, the BAKFlip MX4 looks excellent whether open or closed. If bed access is a concern, don't sweat! When you need to utilize the entire cargo area, flip the BAKFlip MX4 towards your truck's bulkhead and let the integrated prop rods support the cover.