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A Firm Double Mattress Balances Comfort and Support Double mattresses that are firm provide both comfort and support. It's ideal for back sleepers. Firmer mattresses can reduce sagging that could cause back pain. They also help distribute weight evenly, reducing pressure to joints and muscles. A firm bed is often suggested for stomach and back sleepers or those with a larger build. However, it may be uncomfortable for side sleepers. Comfort The correct mattress can make the difference between a relaxing nig