The Rightline Gear Non-Skid Roof Pad is designed to keep your car top carrier from shifting while protecting your vehiclea(tm)s roof from any hard edged objects inside. Sized for use with all car top carriers, the 36a� x 36a� pad can easily be cut for a custom fit underneath smaller carriers. A great safety accessory for car top carrier bags. Dimensions: 36a� L x 36a� W Prevents car top carrier bags from shifting in transit Protects roof from sharp edged objects inside bags Can be cut to size for use with any carrier Recommended when using Rightline Gear Car Top Carriers on vehicles without roof racks This product ships in approximately 1 days