Material: The bike light is made of silicone and LED light, waterproof. Size: Each bike light is about 4.1 x 3 x 2.8cm, lightweight and general size, suitable for most bicycles. Three light modes: tap the lamp once to turn on a steady glow, tap twice for fast flashing, and three times for slow flashing. Press and hold to change mode. EASY TO APPLY - These bright lights are easy to attach and remove from any vehicle. Use them on your city bike during the week and on your mountain bike at the weekend. Package Content: You get 12 pieces silicone bike lights in 6 colors, 2 pieces for each color, enough quantities for your use and replacement. Product Description Specifications: Material: silicone and LED light Color: as shown. Size each: about 4.1 x 3 x 2.8 cm. 3 flashing modes: full light, fast flashing and slow flashing.Easy to Install: These bright lights are easy to install and remove. Scope of delivery: 12 x bike lights. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store