Safety may be the obvious goal, but dont overlook the "wow" factor you'll gain when your bike is festooned with these eye-catching, brilliantly bright LED lights! All components are waterproof and mounting hardware is included. Cosmic Bike Wraps are a rope with LED lights to wrap around your bike frame (sizes vary from 6.5' to 10' and have 40 or 60 lights). Requires 3 AA batteries (not included). Go Bike Lights are a bar containing 6 LEDs with super wide beams. 4 Modes can be set: 1 constant and 3 flashing speeds. Requires 2 AAA batteries (not included). Each Wheel Brightz Tire Lights package includes a 20-LED light rope for one 20" or bigger wheel. Requires 3AA batteries (not included).