Heart Shaped Bike Tail Light, West Biking Bike Rear Light Waterproof Warning Taillight Bicycle LED Night Light (Red) plastic * Size: 5.9(L)*2.5(W)*1.1(H)in Weight: 0.15lb. * Features: Environmentally silicone material, with no deformation, high temperature, high strength, high elasticity, high tear resistance. SLIGHT WATERPROOF & EXQUISITE APPEARANCE. * TWO LIGHT MODES: Strobe and Steady modes ,so you can be easily seen in early morning fog, dusk, nighttime, and dawn. * DESIGNED FOR SAFETY: These ultrabright LED lights feature two lithium ion batteries. This helps other riders, drivers, and walkers spot you when riding in low light or complete darkness. * EASY INSTALLATION: Our premium bicycle lights can be installed in seconds without the need for any tools or other equipment. Add a light to your bike, backpack, helmet or other areas for maximum safety.