Silicone MaterialMade of durable hard silicone shell it is not easy to break and will not damage your items. The silicone at both ends plays a protective role so it can't withstand a lot of force. It is recommended not to twist the protective cover at both ends very hard when using. Multiple UsesMulti-functional cable ties are available in different sizes suitable for bundling various wires such as headphone cables power cables food packaging bags etc. to keep your desktop tidy. Reusable TiesSilicone ties can be used repeatedly for long periods of time - they can be twisted to form any desired shape and are fun to use at home or out camping.