Professional Materials: Made from natural rubber latex thread imported from Southeast Asia with exceptional elasticity and strength. This ensures consistent tension and allows for up to double the stretch.Sturdy and Durable: The highly elastic rubber core minimizes the risk of cracks or breaks. The high-strength polypropylene wire jacket ensures abrasion resistance, UV resistance, and weather resistance.Easy to Use: The rubber bands secure your items in seconds and are very easy to use. Pass the rubber through the two eyelets to secure it and pass the loop over the ball.Set Contents: Each set includes 30 rubber bands with balls. The tent bungee diameter is 4mm, the ball diameter is 25mm, the total length is 10cm and can stretch up to 20cm.Multi-Application: The 10cm length is perfect for daily tying needs and is reusable. An indispensable assistant for tying down tarps, camping, posters, banners, trampolines, projector screens, and much more.