The Airhead 4' Bungee Dock Line is designed to protect boats, docks, and hardware by absorbing shock during docking. Suitable for vessels and personal watercrafts up to 4,000 lbs, it features an internal bungee cord that acts as a built-in snubber, reducing strain on cleats and pylons. Two foam cleats prevent rope chafing, while sliding adjustments on each end allow for quick and secure docking. This line offers reliable performance and durability for expert boaters seeking effective shock absorption and ease of use.