Material Safety: The bicycle silicone ring is made of silicone, which is waterproof, non-slip and shockproof. The silicone material is durable and not easy to deform and has good stretchability. It is suitable for bike lights with hooks DURABLE AND RELIABLE: These silicone mounting rings are designed with open straps that can be firmly attached to seatposts and handlebars of different sizes to keep the lights safe when cycling at night and to keep your lamp handheld in place Easy to Use: These bicycle silicone rubber rings have strong elasticity, you can bend and stretch them easily, and you can use them with two hands without using other tools. You can attach lights and accessories very well in different positions and angles PORTABLE SIZE: They are light and small and can be put in your pocket, saving more space for you. Please make sure your car light fits this bike light silicone tape before purchasing Warm Reminder: Dear buyers, due to lighting effects, screen brightness, manual measurement and other reasons, there may be some slight differences in the color and size between the photos and the actual items.