The Thule SquareBar is the foundation of many multi-sport rack system. They are classic, heavy-duty steel bars that come in a variety of lengths and sizes to fit vehicle specific requirements. Sizes include the following : 108 cm (43 inches), 118 cm (47 inches), 135 cm (53 inches), and 150 cm (60 inches). These bars are galvanized and made out of black corrosion-resistant polymer coating that provides additional grip for cargoes.

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.