I have a condition that causes my extremities to feel much colder than conditions would warrant. I'm not sure what triggers this, but occasionally it can be quite uncomfortable, especially for my feet. Last night after I went to bed was one of those uncomfortable times, and I jokingly said to Debbie that I needed a hot water bottle. We both remember these from our childhood, though I haven't seen one in a good many years.
A few minutes later, Debbie appeared, laughing, with a towel that she stuck under my feet. It was warm, and it felt absolutely heavenly on my feet. But it wasn't actually just a towel, it was a SnuggleSafe pet warmer – for several years now she's been warming up a few of these every night for our outside cats. You nuke them in the microwave for a few minutes, and they stay warm all night.
Well, I can now attest to their effectiveness as a foot-warmer! I think the manufacturer is missing a huge market opportunity &dnash; these things beat the pants off a hot water bottle because they stay warm so long.
If you're wondering how they work, they're filled with fairly exotic stuff called a “phase change material” – far more effective than water at storing heat. The one that Debbie heated up for me last night was still warm when we got up this morning...
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