Professional Materials: Imported Southeast Asia natural rubber latex wire, with excellent elasticity and resilience, ensures constant tension and can be stretched up to 2 times. Sturdy & Durable: The highly elastic rubber core ensures that it does not tear or break easily. High-strength polypropylene wire sleeve guarantees abrasion resistance, UV and weather resistance. User-friendly: Bungee cords secure in seconds, very easy to use. To attach, pull the elastic through both eyelets and pull the loop over the ball. Can be used outdoors for more than 2 years. Delivery: 25PCS elastic cords and a drawstring storage bag. The diameter of the cord is 0.16in and the diameter of the ball is 0.86in, the total length is 6 inch and can be stretched to 12 inch. Multi-Application: 6 inch length is enough for more daily tying needs and reusable. Definitely a good helper for fixing tarpaulin, tent, poster, banner, trampoline, projection screen etc.