The GLO-TOOB is small easy to carry personal light source. It is virtually indestructible and reusable with a long lifespan LED. Great for camping, scuba diving, cycling, running, sky diving or just about any sporting activity. Increases safety when you need to be seen or need to keep track of objects at night. Its compact design allows you to easily carry it in your pocket, on your belt, or in a glove compartment. GLO-TOOB was conceived to replace chemical glow sticks that are known to be unreliable, not bright enough and a disposable environmental pollutant.