I have used these bands on several different helmets in a couple of different departments, and they're the best solution I've found for helmet mounted lighting. They work well on traditional and modern helmets, and allow you to hold any kind of small flashlight you like plus all of the wedges, pens, punches, and other junk people seem like to keep up there. They're also much more low-profile and snag resistant than any of the brim-mounted lights I've seen. The only downside is that they don't really work with a faceshield. As for the folks who say they fail in the heat, mine stand up to a pretty regular shift of firefighting and rescue work and have never let me down. They do wear out after a few years depending on use though (it is just a heavy rubber band after all). My advice is to just buy a couple of them. I usually buy three or four so that I'd have extras, but my partners always buy them off me.