I bought both children a Sainsburys fleece duvet set. It comes in pink, grey, or navy (the navy cost more). They are on sale in store, so it was an impulse buy - they both love them. My Eldest has a very cold room (above the garage, poorly insulated, refuses to turn her radiator on) and has asked for another set because she doesn't want to take it off her bed.
I usually refuse to buy polyester bedding for myself, as it's been too hot/sweaty/stinky and rash inducing in the past.
But... I fell in love with the pattern & feel of the Grey leopard print faux fur duvet set which was on the same display, and have been really happy with it.
The 'fur' is only on one side, and the other is like a supersoft suedette - almost like microfiber, but you don't feel like a giant cleaning cloth 😁. I'm also menopausal, and have been surprised this is more comfortable for me than some other sets I have. Don't get me wrong, I still overheat at times, but it doesn't seem to happen as often.
I do sound like an advert, but we really do like these. Had them a few weeks. Literally would not have bought if they hadn't been on sale, but am so glad I did.