This mattress started to dip within months of purchase. Macy's sent a furniture technician who arrived with a pencil tied to a card board by a string. (not kidding). The technician put the card board in the middle of the mattress and eyeballed how far the pencil and string fell from the cardboard. Macy's said that the mattress from this process dipped "only an inch" on the edges and this is within acceptable guidelines and said 1) they could not warranty the mattress and 2) can send another technician in a few months. So, the center of the mattress is higher than sides, and it's just awful to sleep on a sloping mattress. Super disappointed in the quality and Macy's customer service.