As its name suggests, the Thule Fat Bike Adapter is an adapter for the Thule bike carrier to allow the transporting and carrying of fat bikes. Fat bikes, or fat-tire bikes, are off-road bicycles with oversized tires designed for unstable terrains, such as snow, sand, and mud. With winter hanging around for a longer time than usual, outdoor enthusiasts can easily upgrade the wheel holders of their Thule ProRide Bike Racks using these adapters in order to haul their fat bikes on top of the vehicles conveniently. These high-quality holders can fit tires between three to five inches wide. They are designed in a way that enables easy swapping between fat bike use to standard road and mountain bike use.

Thule is an industry leader, manufacturer, and distributor of premium outdoor and transportation products. Founded in 1942 by the Thulin family in Hillerstorp, Sweden, Thule started out as a company that specializes in roof racks and other automobile accessories. True to the company's motto "Bring your life," Thule started producing products that enable the car owner to bring their outdoor equipment and luggage. Over the years, Thule has grown and became a company that offers a wide range of high-performance products including strollers, bike racks, luggage, roof racks, cargo carriers, rooftop tents, winter and water sport racks, bike trailers, child bike seats, backpacks, van accessories, laptop cases, tablet cases, phone cases, camera bags and cases, and bike bags and racks. The Thule Group also includes several world-renowned companies including Case Logic, SportRack Inc., Chariot, Yepp, and Tepui. Thule has 4700 points of sales in 136 countries worldwide, and has around 2200 employees.