Sidekick LED Rechargeable High Visibility Reflective Belt Reflective belt emits high-visibility LED light for up to 36 hours for optimal safety & protection Fully adjustable, comfortable, lightweight gear clips around waist, shoulders or backpack The belt is rechargeable via micro USB charging cable that comes with it. No need for batteries! Switch between flash or glow modes depending on environmental conditions for added safety. Great for men, women and children who enjoy walking, hiking, biking, or any outdoor sport activity!