Electric blanket replacement

Jax, I have an electric over blanket, a duvet really. It’s amazing,I’d never go back to under blanket now. You can pull it right up to your ears! Pull it in to that gap at the back of your neck! I leave it on all night, and have window wide open next to me, it’s glacial in my room and I’m gloriously warm! Perfect, my husband likes a warm room, no open windows, so is in his own room ???Perfect?