Peace of Mind: The ball elastic band is strong, durable and strong. These elastic rubber bands will not lose their stretch and will not snap, break or fray in most weather. Our sizes are shown exactly. Also suitable for indoor and outdoor use. Checkout Care InstructionsSTRENGTH AND PRECAUTIONS IN THE PACK: Our 10 Pack Waterproof Black Bungee Cords are made from latex with a stretch nylon exterior. Comes with a stronger 2.5cm plastic ball. It will securely hold the tarp and preserve your belongingsReliable Elasticity: The heavy duty bungee cord is 20cm long. They can be stretched up to 40 cm. Due to its malleable strength, it remains elastic for a long time. Sturdy ball helps hold tarpaulins, netting, etc. in placeEASY TO USE: Our elastic toggles are easy to fasten and unfasten. Simply thread the elastic loop through the eyelet so that the ball fits snugly around the eyelet; then use the loop to attach to the anchor pointMULTIPURPOSE: Our bungee tensioner can be used both indoors and outdoors. They coordinate well with any sheet with eyelets. However, you can use them to tie anything, such as poles, logs, etc. You can lengthen the bungee cord for greater cord support by tying them together