Bike Brightz LED Lights in Blue is a revolution in bicycle lighting. This unique new light uses LEDs to make bicyclists more visible at night. It lights up any bike with a vivid halo of intense color. Looking cool and being safe have finally come together! Bike Brightz: are lightweight, durable, easy to install, affordable, fits on kids and adult bikes, uses 2 AAA batteries, 5 colors, water resistant, increases visibility of rider, has Coolness/WOW factor with kids, and adults love it for its safety factor.