I was originally pretty stoked to try out this bed in CALI King as my wife is a firm stomach sleeper, and I'm a medium side and back sleeper. We tried every variation we could but never could find anything that was even tolerable for more than a day or two. and the weird no-go zone in the middle is less than desirable. I asked for a return in the middle of last year and was contacted (after over a month of emails back and forth with customer service) by a gentleman that wanted to try sending us differently configured layer to see if he could make us something that worked. I agreed, however never heard back or received anything from them. So again after phone calls and emails, I finally just asked for a refund. They agreed and I filled out paperwork, set up the donation that they coordinated, and took photos as requested. The Only reply I've gotten from them since february is that the refund is in process. So now I've donated the mattress AND haven't received a refund. Customer service has been nearly non existent since purchase last year. I based my purchase on all of the rave reviews, but I can see no possible way that there are great interactions with LUXI. At least I haven't seen it.