
Body impressions are common, particularly in old mattresses and softer mattresses with more plushness. However, a mattress with noticeable dipping and sagging after just one month is an issue.
No matter the quality of your new mattress, be it one of our top picks in this year’s best mattress guide or any other, sagging can be a problem — particularly if you don’t get a mattress suited to your sleep style and body weight.