Builtin shock absorbing design: A hidden rubber band rope inside a woven PE outer layer acts as a builtin shock absorber to cushion the impact from tides and waves. The line helps keep the boat secure during bumps while docking and protects the boat, contributing to overall safety. Quick docking: Features a 316 stainless steel snap hook that enables quick docking in about 7 seconds, even for firsttime users. Two foam floats protect the boat from scratching, and if the attachment is ever dropped into the water, it will not sink. Suitable load and compatibility: For boats and watercraft up to 4,500 lbs, with a tensile strength of 2,200 lbs. This makes it a good choice for motorboats, SeaDoo, WaveRunner, pontoons, and dinghies, among others. Durable and reliable: The bungee cords resist acids, alkalis, and chemical corrosion, and are designed to endure a variety of outdoor environments for reliable outdoor use. Use scenarios: Marina or slip docking: Quick snap docking with the 316 stainless steel hook while protecting the hull with foam floats. Trailer loading/unloading or water sports: Secure and cushion the vessel during fast docking or abrupt movements, reducing hull wear. Beach or roughwater docking: Builtin shock absorption and buoyant floats help maintain security and prevent sinking if unexpectedly dropped overboard.