besst mattress ever.  i suffer from degenerative disk & joint disease which cause severe chronic pain.  i do best on a firm mattress but tried others without pillow top and found that i could feel the springs.  wayfair upgraded my mattress to orthopedic w/ pillow 
 top and that has solved the problem.  i am finally beginning to sleep thru the night. way to go wayfair, especially marissa with customer service, who could not have been more kind and helpful