●?Made of high-elasticity waterproof silicone material, stable, durable, and strong extension tension. ●?High-elastic silicone, multi fixing method-can be installed on the handlebar, seat post, front fork, backpack, etc. ●?The light with white LED can be fixed in front of the helmet-night riding can be used as headlights and lights.The light with red LED can be fixed behind the helmet-it can be used as a tail light. ●?3 switching methods: fast flashing, slow flashing, and constant light. Can switch quickly according to your actual needs. ●?Emergency lighting, outdoor play at night, mountaineering lighting, and bicycle lighting are all suitable.