The best firm mattresses in 2021 – CNET [CNET]

Firm mattresses are the ideal choice for preventing — or alleviating — pain, especially if you’re a larger person. They generally have extra layers of foam or cushioning that support your body weight and prevent the mattress from sagging, which keeps your spine properly aligned. 

But it’s a delicate balance to find a mattress that offers ample support, but also still feels comfortable. While you don’t want to sink into the mattress, you do want to have enough cushion to help alleviate pressure, namely on your shoulders and hips. Fortunately, there are a lot of options out there, and these are the best firm mattresses for the job.