>> man.. I would pay a pretty penny for a mattress like that. Best we got in this world is an electric blanket, which has it's drawbacks.<<

There are "self-heating" cat mats, with filling that holds and reflects the cat's body heat.

The concept in this poem is based on the kind of thing used for some handwarmers, it just lasts a lot longer.

>> Mind you, if we did have something like that. I'd probably not leave it for the whole of winter. I feel for Faraset! <<

My sympathies.