UNBELIEVABLE!!!! It’s a phenomenal mattress! I have chronic fibromyalgia, combined with a previously broken neck and back and shoulder pain. I would wake up every morning miserable on my last mattress so I desperately needed this! And it is exactly what I was looking for. I was very nervous about committing to something that I hadn’t even had a chance to lay on or experience in any way but it did have a pretty detailed description and luckily it turned out to be quite accurate. As this heavy products are nearly impossible to send back by myself if it hadn’t worked out, which is the other worrisome aspect of ordering a mattress (or any heavy item) online.  
But it all worked out very well and I am incredibly grateful for the whole process and also to not hurt so much in the mornings now. Thanks Wayfair!  
But I would highly recommend this mattress for anyone that suffers from back pain or any pain.