Best Mattress 2025 Firm Reviews. As its name implies, the serta iseries 2.0 hybrid (starting at $1,599.99) is a hybrid mattress, meaning it’s made from both memory foam and springs. The sealy newton posturepedic mattress is our top recommendation for the best firm mattress you can buy.

Here are the best firm mattresses of 2025. Looking for a new mattress?