Visibility and Safety - Our Nite Ize LED line was created to keep you "seen & safe" in all conditions. Powered by ultra-bright, efficient LED illumination, these products feature replaceable batteries and are fully reusable, minimizing their environmental impact. Whether you run, bike, hike, fly, dive, or sail, no matter how poor (or non-existent!) the light, there's a lightweight, comfortable Nite Ize LED product to help others see you clearly, and help you see your surroundings better too.