4pcs USB Rechargeable LED Light Bracelets Reflective LED Running Bracelet Adjustable Flashing Band Safety LED Light Bracelet for Arm/Wrist/Ankle/Leg Running Cycling [SUPER BRIGHT LED LIGHT REFLECTIVE MATERIAL] Improve your visibility and safety during your nighttime sports activities. Stay visible in the dark when running, cycling, walking the dog or doing other outdoor activities. It provides better visibility than other reflective sports accessories. [ADJUSTABLE SIZE] The light strip is adjustable from 29cm in length. Fits most men, women and children. You can wear it on your wrist, ankle or arm. Of course, you can also carry the LED bracelet on your backpack, bike or jacket. [Three Light Modes] Fast flashing, slow flashing and continuous light, you can choose one of them as your preferred mode during your outdoor activities. [USB Rechargeable] You don't need to change batteries or pollute the environment. Easily charges via any USB port. [Suitable for all activities] Whether you're cycling, running, jogging or walking the dog, this LED bracelet will find its place. place in a variety of themed events: nightclubs, pubs, village halls, concerts, parties and festivals.