Had the worst pain I ever had in my right shoulder, so bad I went to see an orthopedic specialist. He diagnosed it as arthritis said it was something I would have to learn how to live with the rest of my life. Took the advice of my favorite radio personality Andrew Wilkow & purchased a Casper mattress. After 3-5 nights my shoulder pain is practically gone. Thanks for a great product, would recommend it to anyone.