Specification: Features: 1.Safe and Visible: When you are doing outdoor activities at night, the LED reflective armbands can provide ultra-high visibility to ensure your personal safety in the dark 2.Lighting design to add more cool and attractive senses. Perfect for Running, Cycling, Hiking, Camping, Parties, Concerts and other outdoor activities. 3.Wear them on other body parts to create your own party style at festival or carnivals. 4.Made from quality materials to ensure comfortable and longer service time, it is a nice bracelet for everyone to play. 5.There are 2 types for your option, meet your different needs.One is rechargeable, another one is built-in button battery Notice: Please allow 1-3cm deviation due to manual measurement Actual color may be slightly different from the image due to different monitor and light effect Description: Material: Nylon Size: Length:29cm-36cmadjustable Width: 2.5cm Package List: 1x LED Armband