Cyalume ChemLight Light Stick, Military Grade, 8 Hours Duration, 6 Inches, 10 Pack

As expected. Colors are vivid. Brightness is great. Lasts as advertised. Great for both fun and for emergencies. Work well to help kids cope with power outages and just for fun. Great to put in a first aid kit or go-bag for various uses.

Great lighting mechanism! I bought a couple of these and really put them to the test. They are pretty flame retardant, and they work equally well in hot and cold conditions. The plastic enclosure is solid and will leave you with no worries of leaking! These are white so they are not the brightest, the green is the brightest but these are a close second! They illuminate well past the given time table, it's only AFTER the 12 hours that the light begins to diminish. A very solid and dependable light source that everyone should have for emergencies!

Bought a supply of these after living through hurricane Irene this summer, and they're everything they claim to be. The packaging is sturdy and made for long-term storage, yet it just takes a second to rip one open and light it up. I've tried both the "commercial grade" and the "military grade" (these are the milspec), and the military grade seems to burn somewhat brighter and longer, although to a great degree, intensity and duration depend on ambient temperature. I've noticed that in warmer temperatures, you get a brighter light that doesn't quite last as long, while in the cold, you get a dimmer light that lasts much longer. These are the long duration light sticks. They aren't as bright as the "high intensity" ones, but instead of 30 minutes, these last at least 8 hours (in cold weather, I've had some producing useful amounts of light for about 12 hours). Requiring no batteries or electricity, these are safe in hostile environments, such as when investigating a gas leak. They're also bright and strong enough to make a good replacement for road flares. They're also lightweight, safe for kids and handy on the boat for emergency lighting. Everyone should have a supply on hand for emergencies - definitely recommended.

These work and did last the 8 hours. They are not as bright as I expected but they worked for what I needed them for.

Perfect for when the power goes out !

So theirs not much to say about these Chem lights. They only have one function, which is to "light up" and they don't do that very well. They will glow for over 12 hours, BUT even when first activated they aren't very bright at all. If you were trying to read with them when activated you'd barely be able to. In my opinion, these would be good for using with NVG's, or if you were in a tunnel or mine shaft and it's all you had to at least navigate because you could hang them or drop them at intervals so that you could have some sort of reference. But that's is and that's being generous.

The Cyalume Military Grade White Glow Sticks (6”, Pack of 10) offer bright, dependable illumination in situations where battery-powered lights aren’t practical. I keep a few in my emergency kits, vehicle, and camping gear, and they’ve come in handy more than once. These ChemLights activate instantly with a snap, providing a steady white glow for up to 8 hours—great for marking, signaling, or navigating in the dark. Unlike cheap glow sticks, these are military grade, so they’re non-toxic, waterproof, and built for rugged use. The white light is bright enough to read by or illuminate a small area, making them useful during blackouts or roadside emergencies. Plus, with a long shelf life, they’re ideal for long-term storage. One note: These are single-use only, so once activated, they can’t be turned off or reused—but that’s expected with chemical lights. Overall, the Cyalume ChemLights are a reliable, high-performance glow stick option for emergencies, tactical needs, or outdoor use. Dependable when it counts, and built to military specs.

Nice and bright. My kids love them. I love them. Will be buying more