Mark out submerged boating dangers with one of the most-rugged and well-known buoys around the Polyform A-Series Buoy! Plus, it's strong and durable enough to double as a docking or boating fender. Thanks to even-wall thickness, these fenders resist years of abuse and abrasions without puncturing. The Polyform A-Series Buoy features unique vinyl valves and reinforced rope holds, which ensure years of use in the water, on a boat, or at the dock. Mark out submerged boating dangers Doubles as docking or boating fender Even-wall thickness adds strength and durability Unique vinyl valves Reinforced rope holds