Maxsa Innovations X-Large Reflective Safety Vest with 16 LED Lights: * 16 LED lights can be seen up to a half mile away * Great for running, biking, jogging, walking the dog at night, crossing guards, construction workers and more * Made with highly-reflective fluorescent material making you more visible at night * LED lights can stay on continuously or flash 150 times per minute * Features pocket for a cellphone or other portable device * Flexible, weatherproof and lightweight mesh construction * Operates on 2 x AA batteries (not included)