I'm a buyer who's purchased a full sized mattress. Please note I'm an obese women and it's been about 2 months since my purchase... I think.I'm disappointed in that my rear has caused a dip that's not bouncing back. This is exacerbating back misalignment and adding to my sciatica pain. I move around the mattress now (edges, turning mattress 'round, etc) in hopes that it will last until I can afford another mattress.I went to an Air BNB home and had the most amazing mattress ever. I wish I'd checked it. I think it was a standard, not foam mattress. The point is, maybe this mattress (and similar types) aren't the best for obese people.I may submit a photo when I can.