CyalumeMilitary Grade White Glow Sticks - Premium Bright 6” ChemLight Emergency Glow Sticks with 8 Hour Duration (Bulk Pack of 10 Chem Lights)

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.

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!

Perfect to light up a mountain bike trail for some night riding

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.

Chem lights, a must for every home incase of emergency. These lights are no different from what is expected from chemical lighting, they are easy to store and grab at a moments notice and are safe to use in any enviroment. Do not expect flashlight quality, however, because these lights will not illuminate a room, and begin to dim dramatically after activation.

when purchasing light sticks, quality matters. I get cyalume brand and they are always excellent.

I added these to my family first-aid kit. We used one and the white color is great. Hope I never need them, glad I have them.

Like the name says, "military grade" which to me means bright and last long which is true for these. I have the blue and green too all very bright and last 12 hours plus with at least 9 hours of bright light.