Must-have rack pads for keeping your board safe on your roof rack The Dakine XL Aero Rack Pads are the answer to a more aerodynamic foam pad for your existing roof rack crossbars. Transport your surfboards with these 18-inch wide rack pads with upper padding and a sleek hook-and-loop closure holding them in place. The Aero Rack Pads are offered in two sizes to fit a range of crossbar circumferences. Fits wider/ thicker rack cross bars Only pads top of bar for sleek fit Durable UV resistant 600D polyester material Hook and loop closure 65% Polyester, 14% Neoprene, 13% Nylon, 7% Spandex, 1% Polyurethane 34″ [ 86.5cm ] long pad – Set of two.