This lamp made of Silicone which sturdy, durable, and stretchable. It’s waterproof design which do not be afraid of flooding in rainy days. Stay safe when you cycle rear front bike light set gives you lights to mount on both the front and back of your bike, so that can see you in both directions and you can better see the road. Feature - ColorAssorted Color - Material: Silicone. - Size: 3x4.7x2.6cm. - AG10 battery. - Water resistant shower proof design - is not afraid of rain flooding. - Easy to use. Install or remove without any tools. - Durable silicone construction holds up in conditions. - Mounts to any bike quickly and easily by looping the loop around the frame, and hooking to the light. - Made of highly elastic and waterproof silicone material. - Sturdy, durable, and stretchable. - Multi-function fixed mode. - waterproof design: do not be afraid of flooding in rainy days. Package list: 4 x Lamps