Sturdy and Durable: Natural rubber latex thread has excellent elasticity and resilience, and the highly elastic rubber core ensures that it will not tear or break easily. The high-strength polypropylene coating ensures resistance to abrasion, UV and weathering. Easy to Tie: Bungee cords are very simple to use. Thread the string through the hook/hole and pull the loop on the plastic ball to ensure a secure connection. You can also combine them to add length if needed. VERSATILE: The tarp tensioner is well made and sturdy, 15cm length is enough for daily lashing needs, suitable for tarps, camping, boat sheds, tents, tarps, gardens, railings, caravans, sleeping bags, curtains and other items. Professional material: The tarp elastic rope is made of special rubber, which has good elasticity and recovery power and can be stretched up to 2 times. It provides plenty of tension, keeps the tarp in place and can be released quickly. Adjustable length: 30 bungee cords, total length 15cm, bungee cord diameter 4mm, ball diameter 27cm. It is the perfect tool for camping, hiking and other outdoor enthusiasts. Note: The data are all measured manually, please allow 1-3cm error due to different light and display, there may be some color differences, please refer to the actual item received.