The mattress arrived tightly rolled up in a tall box. After unrolling it, and letting the lumps settle for over two weeks, it never regained it's original shape and was humped up high in the middle. Wayfair was awesome, and sent another one right out to us. Unfortunately this one did the same thing, but it was concave in the middle (only 4-5"  thick instead of 14")  and the ends were high. Please see the two photos. Wayfair customer service was great and credited us for the replacement one.