Mega
I didn't trust it at first, but honestly, it stays warm for ages—like, I'd even say a whole day. The one that had a lot of animals lying on it was still really warm even on the second day. My cats, guinea pigs, and even the dog quickly figured out where the cosy warm spot was. This way, I save a good bit on heating costs when I'm not at home, and even the guinea pigs outside have a source of warmth without getting sick from the mix of cold and warm air. I'm genuinely delighted.