Best Firm Mattress 2025 Consumer Reports. Looking for the best mattress? The best firm mattresses offer a flat, stable surface that promotes spinal alignment while still gently contouring to your body’s natural curves.

To see the results for each mattress we tested, check out our comprehensive mattress ratings of more than 260 models, where you can sort according to firmness level, as well as price,. For consumer reports’ full slate of mattresses tested, visit our comprehensive ratings and reviews.