Bicycle light set: you will receive 4 bike lights with enough light and different colours to suit your needs, perfect for changing Material: high quality, highly elastic, waterproof silicone, stable, high temperature resistant, waterproof, strong tensile strength. All-weather waterproof headlamp 3 lighting modes(no battery): 2 LED bulbs with 3 different modes, including full light, fast flash and slow flash, providing you with 3 modes to choose from depending on the environment and light conditions, ideal for walking in the dark and constantly blinking to make others notice your appearance The right size: each silicone bike LED light is approximately 4.5 x 4 x 1.5 cm and is light enough to attach to your bike without weighing it down; sized to fit most types of bikes, the light doubles as a headlight and tail light so you can do whatever you want for great nighttime results Easy to install: double hook design, central switch design so that it can be attached to many parts of the bike, such as crossbars and seatposts, even backpacks and helmets if required; one simply pulls on the clips to hold them in place. The elements are fixed and the light is securely mounted. Colour: Black, Green, Blue, Red