Bests & Worsts Reviews from Amazon

I am 85 years old, a retired industrial engineer, 5'9" tall, weigh 160 lbs. trim physique. The mattress has all the positive attributes described by so many. I put the mattress to use on May 27, 2019, that is 16 days ago of this writing. After 16 days night time use only, the mattress shows a permanent sag of 5/8" were the center body rests. I contacted the company at "Service@ inofia.com" and never heard from them. I would say: Stay away from this mattress. Their total padding above the springs is only 17/8" thick. less than two inches. Plus, we paid with tax, but free shipping $229.49. The mattress is too heavy for me to ship it back to China, that is were it is coming from. Gus