XIANQI 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. 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 Delivery Quantity: 1 Piece Product color: yellow Product size: length 12cm width 2.5cm Adjustment range: suitable for 27cm-31cm