ADVANTAGE: Absorb shock and eliminate jerking and pulling on your moored boat resulting from non-elastic dock lines. Elastic dock line provides security while your boat moors. QUICK HITCH: Place the buckles on the boat cleat and moor and adjust the slider to secure the buckles. Dock ropes are for quickly and securely mooring your kayak, jet ski, pontoon, sea doo, canoe, powerboat, waverunner, etc. UNIQUE DESIGN: Bungee cord is hidden in the dock string and acts as a built-in Mute. Two EVA foam floats allowing the boat against friction and slippage at each end for easy attachment and quick mooring. They never sink if they accidentally fall overboard. Double reinforcement at inner knuckles. PERFECT SIZE:Unstretched Length: 124cm; Stretched Length: 170 cm. PACKAGE INCLUDES:2x elastic dock lines.