Back pains disappeared! This is NOT a fake or paid review. Two years ago I had an MRI and was told I have Spinal Stenosis and 2 herniated discs. Several spinal injections at a Nevada pain clinic helped. Physical therapy also helped but most mornings I still woke up with some pain and inability to stand up straight. Thought I had a good psring mattress but decided to try something new. Received Tuft & Needle mattress on June 20, 2018. Every morning since, I've awaken with ZERO pain and have zero pain throughout the day! Not sure how I could make my opinion any clearer about whatever kind of foam these geniuses created or how happy I am that I found Tuft & Needle.