Having tries this mid priced mattress in the store, we purchased it with every expectation of having made a good choice. It was very comfortable. But after one night, the mattress was already noticeably depressed from our body weights. Suspiciously enough, the depression was deeper on my wife's side and she is only 60% of my weight. We called the retailer who said it would probably recover but after several nights, it just got worse. The retailer reviewed the photographs I took and agreed the product was defective. The retailer behaved most ethically giving us a full credit, waiving shipping charges and giving us a discount on a more expensive style from another manufacturer. The lesson here is to have absolute trust in the concern you are buying your mattress from.