This is the roof rack that inflates in minutes to provide easy transport of oversized loads. Unlike unsightly permanent racks that require tools and time to install and remove, the two heavy-duty rack supports each have inflatable PVC bladders. Double straps at all four ends ensure stability when tucked into the top of the front and back windows; sturdy ABS buckles cinch the straps taut in the car's interior. Five metal D-rings stitched into each rack support's covers secure tie-downs (not included). Once installed, the rack provides 30 1/2" of width for roof-borne items up to 150 lbs. The rack inflates using the included 12-volt electric pump that plugs into your car's DC adapter. Includes bag for unobtrusive trunk storage when deflated using the pump. 46" L x 11" W x 7" D. (5 lbs.)