Non Slip Designed by groove pattern with great grip to prevent the cup from sliding and help to reduce the noise caused by the cup sliding while driving. | Flexible Material Made of high quality silicone, which is soft, flexible, durable, not easy to deform. It's a reliable car coasters. | Easy to Clean Cleaning is simple and convenient, you can wipe it with a dry towel or a wet towel, or you can wash it in water and dry it. | Thickened Base Heat insulation, shock absorption. Prevent the water cup from shaking and rubbing against the car body during driving. |