Vehicle Compatibility: This tonneau cover and topper fits 2017-2026 F250, F350, F450 Super Duty Includes Dually; is compatible with 5th wheel and gooseneck trailers Integrated: The Fas-Top Traveler is an integrated all in one cover for pickups; It combines the function of a tonneau and soft truck top together by utilizing stow configurations; This combination transforms in less than a minute and is designed to be user friendly Solid Base: Fas-Top covers have the thickest rails and a built in utility track perfect for customizable cargo management; provides weather protection when you need it the most Stow Below: Collapse your truck top down into a sling for a neat stowed look; No bulky frames riding on top of the truck bed Easy to Use: This tonneau cover is a top mount style that is easy to install and operate; Once the tonneau is installed, the topper is easily added with two pins; The Fas-Top Traveler can quickly switch between stow configurations on the go The Fas-Top Traveler is the world’s first and only modular system that transforms from a sleek roll-up tonneau cover into a full soft truck topper in minutes. Built for versatility and adventure, it adapts to whatever your day demands. The Fas-Top Traveler is an integrated all in one cover for pickups. It combines the function of a tonneau and soft truck top together by utilizing stow configurations. This combination transforms in less than a minute and is designed to be user friendly. The Fas-Top soft truck topper easily stows underneath the tonneau cover or can be completely removed. The tonneau simply rolls to the front of the box and is stowed in a neat bundle when the topper is deployed. This tonneau cover is a top mount style that is easy to install and operate. Once the tonneau is installed, the topper is easily added with two pins. The Fas-Top Traveler can quickly switch between stow configurations on the go. This is perfect for people that like a tonneau cover for everyday use and would like a topper every once in awhile. The in-house team of engineers design model specific tops to fit your truck. They remain hands-on throughout the entire build process. All Fas-Top components are built and tested in North Dakota.