If you and your significant other constantly argue over the temperature when you go to sleep. Aldi is coming to your rescue.
Aldi is selling a half-cool half-warm duvet.
The Slumberdown 'Made For You Two' duvet comes split into two, with one half keeping one partner toasty warm, and the other keeping the other cool.
It also would work for a single person who wants a lighter duvet in the summer and a warmer duvet in the winter.