Enhance nighttime safety with a fluorescent yellow LED-integrated reflector. Improves visibility for safe running. Features selectable lighting modes: constant on, fast flashing, and slow flashing. Purchased on Amazon in November 2024. Used only twice for nighttime jogging, but haven't used it since I stopped running at night. ○ Brand: TERUI Lights ○ Color: Yellow Brightest and excellent visibility ○ Material: Nylon (waterproof) Okay for sudden rain ○ Type: LED-integrated reflector (battery-powered) Coin-type lithium battery CR2032 ○ Size: Adjustable length (Velcro closure) Width approx. 4cm, length approx. 37cm, weight approx. 30g Thank you for viewing.