I had a wonderful Tempur-pedic mattress for over 15 years. Then, when I moved to a new state, I left that mattress behind and ordered a relatively inexpensive mattress from one of the newer online vendors. After a year, it had softened into a hammock-like shape. So, based on online reviews, I purchased a new Tempur-Adapt Medium. It's certainly better than my previous mattress. But for a side-sleeper like myself, it sometimes feels too firm for my shoulders and hips -- too much pressure on those areas, resulting in a slight tenderness. Of course, I'll keep the mattress. But I long for the original Tempur-pedic mattress that I purchased in 1999.