[eeyore]

Originally Posted by Tringa

Perhaps I'm looking at this more from a walkers point of view where weight is a premium, but at 200g each it could add a fair bit of weight if you need a few of them.

Could be wrong but it looks as if once it is started it cannot be turned off, so you use an hour's worth of heat, whether you need it or not.

Still I'd be tempted to buy one and try it at home to get a feel for them.

you can snuff them ion the same way that you do a meths burner - by putting a flat metal surface over the top of the can and excluding air - that said from a weight point of view a bottle of meths and a burner is still a better bet.