YTanazing Creative Bike Light-Shake Testicles/Silicone Riding taillight lamp&Fits All Bikes/Outdoor Backpack Hanging lamp Lights Ultra bright and soft LED lights, tied on the bicycle as a warning taillight, or on the backpack, or other objects, is helpful to improve the visibility and safety in night. Water & Shock Proof Silicone Body Protected against splashing water from any angle,so needn't worry in rainy day,needn't to disassembly it when wash the bicycl 3 MODES FOR FLASHING - Constant light(6-8 hours), slow flashing(12 hours) or fast flashing(10-12 hours). Push the power button to change mode and turn on or off,silicone material body, comfortable feeling and elastic. UNIQUE EXTERIOR DESIGNS: The heart shaped tail light looks so cool,let you and your bike more daz Mount this bike rear light anywhere you want in seconds, such as the handlebar, the seat post or anywhere on the frame,even your backpack