Hotysnapz hand warmers

[FinsnFur]

Anyone ever heard of these? Hotsnapz reusable hand warmers http://hotsnapz.com/index.html
Liquid filled pouches. Press on a disk inside the pouch and it reaches temps up to 130 degrees. And you can reuse them over and over?........I dont get it.

Some kind of chemical reaction that boiling it and then letting it cool, restores the product and readys it for later use again.

[yotefever]

They look out of my price range. I do not use hand warmers unless it is below 0* and usually at nite.
I am walking or back in the jeep so I don't get to the point where I need warmers.
When I used to sit in a tree stand for hours on end they might have appealed to me more.
It states the 3x5 only last an hour???
I usually hate disposable things but hand warmers is an exception.
Being so cheap I do put used ones in a zip lock bag if they are still working and use them the next time I go out. 
I guess I do not want to contribute to global warming 

[HuntnCarve]

Jim,

Several years back I bought something along this line called "The Heat Solution" Reuseable Heat pack.  This post made me go find it. 



This thing has been sitting in a drawer for a long time.  But it's still useable.  I think I tried it once, and found that it did not stay hot for too awful long??  I don't think I ever took it hunting.  When you bend the metal disc in the pack, the whole thing solidifies, and gives off heat.  Then you have to boil it to get it back to a liquid state. This one is 3.5" x 5" long.  You can see by the price sticker I paid $2.95 a century ago..Don't know if they even make this brand anymore?  I use the disposable versions when it's really cold, as they seem to last longer.

Dave

[FinsnFur]

I dont get how boiling the pouch restores it to the point that bending that little flippy disk can do anything.
It's like boiling it sends all the chemicals back into the metal disk and waits for it to be bent again.
Hima goma jima say whaaaa?

[HuntnCarve]

Basic Thermodynamics Jim!  We have here an exothermic reaction catalyzed by the metal disc.  If you remember your chemistry, a catalyst is not used up in a reaction...Therefore, it remains viable..Are you following me so far???  The boiling water reverses the exothermic reaction.  "Energy and matter can neither be created nor destroyed" -If you remember your "Lavoisier"?

Oh what the heck! I don't know?   I'm just rattlin off stuff my Phd graduate student son is explaining.    Now I got a headache.

[FinsnFur]

LOL I wanted to think I was following you. But when you threw in the towel...you hit me with it and I was right back to where I started....BLIND.

[deerdad]

Have used them . years ago can't say how it works . didn't last as long as dry but reusable

[Okanagan]

Had several of them probably ten years ago.  They are fairly heavy and the heat doesn't last much more than an hour or maybe almost two hours, at least the early ones, though the heat was strong and felt good.  One of them split out after about half a dozen uses.  We used them mostly in the stands at high school football games and they were good for that.  Having several in a tree stand might work if you didn't carry them far.

Tear open chemical hand warmers are one time use but they produce heat for many hours, weigh much less and are way better for our kind of hunting and backpack hunting.  We use them in sleeping bags on cold backpack hunts and they normally last all night.

[FinsnFur]

I never heard of these things until the other night, and I was really intrigued. But I'm learning from you guys they aren't necessarily any better then what were using now. In fact not as good.
Thanks