What brand/model for each? My wife would love some solution to this. I was about to try the purple matress.
And then I also use the bedjet. Bedjet.com. It blows air. I just don't like the constant feeling of air blowing, but its great for the feet when hopping in and having the option for quick fix (hot or cold) in the middle of the night.
Great product. Their iPhone app UI could use some love, but it does what I need it to.
(You also get a nice hardware remote)
https://esphome.io/components/climate/bedjet.html
I run my BedJet into HomeAssistant (and from there, into HomeKit) so it's so nice to ask Siri to warm up my bed now.
I found mine at a Value Village for a hundred bucks with everything but the mattress clip and remote, and BedJet support was able to just let me buy the mattress macguffin again for around $25ish.