When I was a kid, I remember my grandmother used metal hot water bottles with a crocheted cover. My wife has recently started taking a cola bottle with hot water (not boiling, or the plastic will melt) to bed. Perhaps I should give her one of these fancy rubber ones.
here in germany you can buy the rubber ones with cloth over it. They are way more comfy and don't get super hot. Regardless of the temperature in my room, my girlfriend is always cold, so every night I fill it up to warm the bed
> here in germany you can buy the rubber ones with cloth over it.
There are even different thicknesses of cover, depending whether you want lots of heat (thin cover so you don't get that rubber feel) or more of a lower temp and slow release (thicker padded cover).
