Feature: 1. Applicable Scenario: Marine dock bumper can be inflated and deflated for transport, very convenient, improved air nozzle, strong sealing, which is perfect for marinas, yachts, sailboats, rowing boats, ski boats, canoes, pontoon bridges, fishing boats, buoys, and so on. 2. Impact Resistant: Boat buoy bumpers are made of high strength PVC with superior abrasion and impact resistance, anti aging, no cracks or bubbles inside, and can withstand friction and collision between the boat and the dock for a long period of time. 3. Strong Buffering Effect: Marine boat bumper has strong buffering effect, it is important equipment to protect the ship from collision and damage, which can effectively reduce the loss caused by collision. 4. With Two Holes: Inflatable boat bumpers have two holes for vertical or horizontal hanging. Dock bumpers are easy to install and remove, helping you have the flexibility to protect your boat at all times. 5. Waterproof and Ageing Resistant: Black boat bumpers have excellent UV and chemical resistance and are waterproof, frost proof, oil proof, elastic and aging resistant, they won't crack due to brittleness caused by the cold weather and won't color out onto your boat. Specification: Item Type: Boat BumpersMaterial: PVCSize: 4pcs/set Color: BlackSize: Approx. 21.6x68.6cm/8.5x27 inches (size after inflation, note where you measure)Application: Strong buffer to protect boats from damage or abrasions caused by serious collisions, especially when boats are docked or accidentally hit other boats. The soft and smoother surface will not leave any marks on your boat. Great to own as a buoy as well.Fitment:For marinas, yachts, sailboats, rowboats, ski boats, canoes, pontoons, fishing boats, buoys, etc.. Package List: 4 x Boat Bumpers4 x Ropes1 x Instruction Manual4 x Nozzle Pins