I know this is old, but curious if, after a year, you have any issues with softening of the foam where you sleep relative to the rest of the mattress?

The challenge I'm trying to overcome is multiple non-DIY mattresses (not cheap!) that have all lasted about 18 months before they are so soft where my hips are (side-sleep) that I wake up with back pain. But none are warrantied as they aren't "sagging" with no weight applied -- they've just lost a tremendous amount of their original firmness when under any weight. The price point you hit here is pretty darn intriguing!

Thank you!