I was apprehensive about ordering this for home use because of the "RV" designation. When I read that reference only impacted flame retardancy I decided to go for it. I paid $1100 for my previous memory foam mattress and it didn't come close in comfort to this one! Because of the slippage of the layers I read about, I purchased the Bed Bug and Allergy Relief Cover in the 12 inch depth and it fits like a glove leaving no room for the layers to shift. The first night on this mattress I slept like a baby! I'm one who doubts statements like that but it is true! It is AMAZING what a difference an uninterrupted good night's sleep can make in your life! This is a once in a life time opportunity to get such a bargain on such a superior product. Another HUGE plus is that you can customize the firmness by rearranging the layers. I LOVE LOVE LOVE LOVE LOVE this mattress! And for the record, I'm not the average bargain shopper, I'm one who is willing to pay more for quality but this time I paid way less for way more. Did I mention I love this mattress? Pay the extra few bucks for the cover, it's well worth it. Don't hesitate, buy it NOW!!!!!