The 18 Link Ramp 4 Paws is designed for dogs up to 160lbs and has a patented roll out, roll up design. The links are constructed of durable polypropylene which is strengthened with glass fibers. The hinges are made of impact resistant polycarbonate. Ribbed rubber footings on both ends provide stability. 18 Link Ramp is suitable for station wagons, most SUVs and small trucks where the ground to bumper height is no more than 31 inches. The 18 Link Ramp 4 Paws comes with a washable nylon storage bag and training instructions. When extended the Ramp 4 Paws Measures 65 inches Long x 15.5 inches Wide. The diameter when rolled up is 14.5 inches. Weighs 15.75lbs. This item ships directly from the manufacturer. No expedited shipping available. Made in the USA.