Key Message
One systematic review (that summarized 9 relevant studies) provided evidence on the use of mattresses for treating chronic low back pain.
Medium-firm mattresses may lead to less back pain and better sleep quality compared with firmer mattresses.
Mattresses with an air overlay may also improve pain and sleep quality in those with chronic low back pain.
Several limitations of the data informing this report were identified, which limits the certainty of the evidence.