"I love my Helix Dusk Medium Feel Mattress With Extra Support ($599-$1,299). I am a side sleeper and my husband is a stomach sleeper, and it offers great support and comfort for both of us. I have had the mattress for several years, and it actually came with two different toppers that zipped directly to the top of the mattress. I have now religiously swapped back and forth between the two toppers depending on the season. It has been a game changer, as I am a hot sleeper but love a lot of covers. It looks like they are still offering the cooling topper but have swapped it for a regular pad ($100-$175)." — Lauren Hendrickson, head of Shop and Affiliate Growth
If you want to read more, here is the Helix Dusk Medium Feel Mattress With Extra Support review.