i just bought a couple of the old style handwarmers off ****, i got the one j.adams is talking about, the fuel bars are kinda hard to find but i did pick some up on there. I bought one of the old jon-e g.i. handwarmers that uses lighter fuel, its probably from the 1960 from the looks of the packaging it came in, it works great but it does smell so dont think i'll be taking that one to the stand. I like the small disposable warmers from wally world to put in my mittens,i get mixed results from all brands of those.