Bests & Worsts Reviews from Amazon

These simply work. Used them extensively in the military. One thing I will add to your purchase consideration: the Cyalume SnapLight "Industrial" Grade Chemical Light Sticks lights are chemically very similar to the "Military Grade", but with a longer shelf-life. The "military grade" lights are formulated per DoD specification, and as such cannot take advantage of newer formulations. In short: if you are buying the "Military Grade" lights because you think they are better somehow, they are not. They are the same brightness. As a matter of fact, according to the manufacturer the military versions have one year less shelf life (4 versus 5 years for the industrial series). The higher price reflects the custom (older) formulation that the DoD specifies. Source for this info: Cyalume Corporation. So unless you are required to buy an NSN product, do yourself a favor and pay less for a longer shelf-life and get the industrial version of this product. Hope this helps.