Please call 888-834-9971 to order the 3 Hour IR due to special handling procedures. The Cyalume Corporation makes the best light sticks available. These emergency lights are Non-Toxic, Non-Flammable and Weatherproof. Cyalume Chemical Lightsticks are perfect for aviation, marine, camping and survival applications. Government and private agencies have relied on Cyalume Technology for years to help them enhance accident prevention, water and wilderness survival. Once activated, the Cyalume chemical light stick produces reliable, potentially life saving light, for a predictable and dependable amount of time. You never have to worry that a Cyalume Lightstick will suddenly wink out on you at the last second like a flashlight would, and there's never a worry that a Cyalume Lightstick won't last, like a candle. Since Cyalume Lightsticks and Cyalume SnapLights® are completely non-flammable, there's no risk of fire. Indeed, Cyalume Lightsticks never even become warm to the touch, yet provide 360 degrees of illumination, are wind and waterproof and are visible up to one mile. Best of all, Cyalume Lightsticks are manufactured in the U.S.A. to a high degree of product quality. Only the safest, environmentally friendly and highest-grade chemicals are used. Cyalume Technologies is the official supplier of chemiluminescent products to the U.S. Government. Unlike no name brand lightsticks you find in large retail stores, all Cyalume Lightstick products conform to military specifications. Best Glide currently offers the 12 Hour (Low Intensity Green), 30 Minute (High Intensity Yellow), 5 Minute (Ultra High Intensity Orange) 3 Hour (Infra-Red IR Lightstick) and the life saving 8 Hour Green Personnel Marker Light - PML. This is a life limited item. Be sure to keep track of expiration dates. Cyalume Chemical Lightsticks... * Cyalume Lightsticks are guaranteed leak proof, water proof, and are non-toxic. * are 100% reliable and maintenance-free with consistent light output & performance. * are non electrical and don’t use batteries, bulbs or lenses, non-corrodible * Cyalume Lightsticks will not generate heat or sparks and are non-flammable. * Cyalume Lightsticks are safe, convenient, practical and maintenance-free. * reliable in hazardous situations where life will be lost if products do not perform. * have a 4 year verifiable shelf life with a printed expiration date on package. * Cyalume Lightsticks activate manually, on demand, in seconds. * Cyalume Lightsticks emit 360 degree of bright, reliable light. * need no special storage requirements. * are fresh products made to order. * Cyalume Lightsticks are made in the USA. * are an official supplier to US Government - issued National Stock Numbers (NSN)