Memory foam is cheap to produce (that's why it's everywhere) and not that great. Latex foam is much better (IMO, more comfy, cooler and lasts much longer).
I can vouch for the quality of the products from this place (
https://sleeponlatex.com/ - we have 4 pillows at home, 4 at the new home, a king size topper here, and then purchased Queen, full, and 2 Twin XL toppers for the new home.
I don't know if it would be good enough for you, but the 3" soft topper is really nice.
__________________
Steve
'08 Boxster RS60 Spyder #0099/1960
- never named a car before, but this is Charlotte.
'88 targa
SOLD 2004 - gone but not forgotten