Ultra-bright flashing reflective LED band. Fits arm, ankle and can be strapped to backpack, etc. Four separated brilliant LEDs for maximum visibility integrated in chafe-free and adjustable soft-stretch band.• Includes ultrabright flashing LEDs and full reflectivity from end-to-end• 4 ultrabright LEDs for 360 degree visibility• Easy on and off• Drugstore battery for easy replacement• Battery included / ready for use• Fully-adjustable