The Polyform A Series is the global standard among inflatable buoys. It was the first flexible vinyl buoy ever created more than 50 years ago and after manufacturing buoys and fenders for all that time Polyform has perfected the recipe for a great product. No other buoy is trusted more worldwide and the people who put the A Series to the test everyday know that there is no other buoy as reliable. The A Series Buoy comes with a Polyform U.S. limited warranty and is Manufactured in the U.S.A. A versatile, heavy duty buoy made by Polyform and manufactured in the U.S.A A-4 buoys measure 20.5 in. diameter by 27 in. tall with 1.125 in. ropehold eye diameter Commonly used as a marker buoy, anchor buoy, or mooring buoy, and provides enhanced protection when used as a boat fender Suggested for boats approximately 50-60 ft. long, when used as a fender This product ships deflated inflate using 1) a Polyform Inflation Adapter with any standard tire pump connection 2) a tapered nozzle blow gun or 3) a Polyform specialty hand pump MODEL NO - A-4 White