We have absolutely nothing but good things to say about this mattress. There was no adjustment period for us. We did go from a Stearns and foster queen to a Stearns and foster king. The comfort we find with these mattresses are superior to anything we have had before. The king gave us the extra room for us and the queen which is over ten years old has been transferred to the extra bedroom for guests and has held up quite nicely! Feeling like this mattress was made specifically for us!