DAKINE AERO RACK PADS 18' The Dakine 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. 31% Nylon, 25% Polyester, 22% Polyurethane, 19% Polyethylene, 3% Spandex 18' [ 46cm ] long pad - Set of two. Fits regular 5.5-8' [ 14-20cm ] bar circumferenceOnly pads top of bar for sleek fit Non fading UV resistant 600D polyester material Hook and loop closure Only pads top of bar for sleek fit Non fading UV resistant 600D polyester material Hook and loop closure