Cross bar padding for wide, flat rack bars, found on most factory-installed luggage racks. Called SOT Sit-on-top pads by the manufacturer (sits on top of bar) but can be used for most types of kayaks (sit-in and sit-on), as well as for stand up paddle boards, surfboards, windsurfers and assorted small craft. Pads only the top of the bar for better gas mileage. Secures with Velcro closures across the bottom length. 36-inch length. Made of rugged fade-proof fabric that will not tear, rot or sun damage. Internal foam cushions cargo from bumpy roads. The Aero shape fits wide crossbars (up to 3.5 inches or 8 inches in girth). Other lengths are available. Sold as pairs.