Product Details:

Chemiluminescent light produces no heat, spark or flame. These are a must have item for night safety, emergencies, hazardous atmospheres, and underwater work. Great for marking campsites, equipment, fishing gear, trails, diving applications, hazardous zones and dozens of other low light or nighttime needs. Non-toxic, non-corrosive, lightweight, windproof, waterproof, and safe anywhere. To initiate light, simply flex plastic tube. Models have different duration periods for bright light dimming to a glow. Shelf life is normally 2 to 4 years in good storage conditions. Lightsticks give maximum light emission when used at temperatures ranging from 60_F.-80_F. If the temperature is higher than 80F, the light will be brighter, but will last for a shorter duration. If the temperature is lower than 60F, the light will be less bright, but will last longer. Cyalume technology.