Decent enough mattress on a tight budget. Made in China, so don’t expect high quality or longevity. Lots of recent reviews here about ‘fiberglass’ inside mattress cover after removing it. The tag says “Do not remove mattress cover.” So... yeah.
My advice is don’t expect too much. Be smart & buy a quality 4” gel foam topper and use this mattress as a kind of base for support so that you’re not sleeping directly on it.
You will sink like a stone to the floor on all memory foam mattresses if you are overweight. Memory foam isn’t for you. You need a real, high-quality mattress and box spring.
A cheap Chinese foam mattress like this one is not ideally what I’d use, but I needed something acceptable fast. All things considered it does the job. It expanded evenly overall during the 48-hour expansion period except at the very corners, so minus one star. The rest is what it is until I can get a real Sealy pillow-top mattress again.
Update: After about 7 months, the mattress is holding up fine, and it still feels like new. There are no issues at all with "fibers" or any deterioration. When I rub my hand along the mattress it feels soft and smooth. Again, I'm not overweight but slim and healthy, so a 4" memory foam topper on top of it provides a very luxurious and restful sleep experience.