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I think they are usually husks of some type. Cheap, smell nice, conform to body, doesn't transfer heat fast enough to hurt you, and for some reason heats up in
by ip26 5y ago
I think they are usually husks of some type. Cheap, smell nice, conform to body, doesn't transfer heat fast enough to hurt you, and for some reason heats up in microwaves.
- GordonS 5y agoYou can get ones with some lavender inside too - my kids love them!
- QuercusMax 5y agoNot husks - those don't have enough heat capacity. I've used ones made of corn and rice too. It's heating up the actual grain seeds, which I guess have a fair amount of water locked in the starch matrix. It always is a little steamy coming out of the microwave.