-LED security lights with luminous bands help to improve visibility and safety at night -It makes running, walking, biking and other outdoor sports safer at night -Light weight and comfortable to wear, from exercise restrictions, and will not cause tangles even if it is directly attached to the skin -The strap can be adjusted to the appropriate arm size, just tie it to the arm, wrist or calf, press the switch button, and it will work -The 3‑speed light mode can be switched freely, quick flashing, Slow flashing, constant light -With adjustable hook and loop fasteners straps, it can be tied to your arms, wrists, calves or wherever you like -Suitable for outdoor night sports, such as jogging, walking, cycling, concerts, camping, outdoor sports, etc -Item Type: LED Bracelet -Material: Nylon ribbon + plastic +PU fiber