The Nite Ize Led Mini Glow Stick is a compact yet powerful source of illumination, perfect for safety or for fun. It is an excellent alternative to traditional chemical glowsticks. It has a sleek design and a simple twist on/off function. It also features batteries that last over 60 hours and can be easily replaced. Waterproof and equipped with an S-Biner for clippability, these colorful Glowsticks are perfect to keep in your car or home emergency kit, or simply to have on hand for hours of nighttime visibility and safety. As an added bonus - they float!