"but, as mentioned, the problem is that it's not terribly useful once frozen,"<br><br>I seemed to have overlooked that part. Oh well, if I was worried about sticking my foot in my mouth I wouldnt ever speak up. <br><br>That does bring up a pet peeve of mine. Its getting very hard to find a metal canteen. I dont mind putting a metal container close to a fire or on a hot engine block. Or on a car hood on a 95 degree Georgia day. (today for example) Anyway: thats a whole other issue.