This item does what it says- keeps warm through the night. However, it is the same size and shape as a discus, and it is hard. Cosequently, even with its cover on, it is not really comfortable for the animal to sleep on. I have experimented and found that surrounding the snuglesafe with small, soft items makes a nice bed. The instructions say that if your microwave does not have a turntable, to turn the snugglesafe over during heating to ensure that it is heated evenly. I have found that even with a turntable, it heats up better if I turn it over halfway through heating. Overall- very good.
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