Features:1. Adjustable for any size: The elastic bands make easy to adjust for a loose or snug fit. 2. Super bright, comfortable,soft,easy to use, user friendly.3. Our arm light is design to fit both men and women, comfortable to wear on the leg or ankle, arm.4. Change the light between steady mode and flashing light with just 1 click5. Perfect for Running, Walking, Strolling, Cycling, Hiking, Camping, Party, Raves, Holidays, Festivals and Concerts. Notice:1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement.Specification:Product name: LED luminous armbandSpecifications: main body 18.5*3.5*1cm, elastic band 12-17cm, width 2cmMaterial: Silicone+PVC+ABSLight mode: always on/flashing/offApplicable scenarios: outdoor sports, cycling, running, etc.