This is a pair of bungee dock line that is made of bungee cord as the core and polyethylene (PE) braided rope. This dock line is suitable for most boat usage and is durable. It is stretchable from 3ft (3'8") to 5ft (5'6") and the bungee cord core act as the built-in snubber to absorb shock between the dock cleat and boat. It also helps releasing the pressure caused by water movement. A loop and a slide tube is featured on each side for loop adjustment while docking to save boaters' hassle of tying rope to the cleat. The EVA float foam tube that comes on each side helps protect the boat against chafing, sinking, and sliding. Length of bungee dock line: 3 ft 8 inch (before stretching). Color of bungee dock line: Black/Red/Blue. Item Number: PDSA0447.