YOA Reflective Vest - Safety Vest | Nighttime High Visibility for Running - Cycling - Walking | Easy to Adjust | Lightweight Elastic | Put It on Directly Over Your Shirt - Sports Gear 16 LED light up safety vest Good quality, light weight orange mesh nylon safety vest 2" wide reflective yellow stripes with built in LED lights 3 different modes of lighting, continuous, slow flashing or rapid flashing Uses 2 AA batteries, not included