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What to Look For in a Hybrid Mattress Double A hybrid mattress double offers you both a supportive night's sleep as well as the comfort of cushioning foam and springs. It provides optimal support and comfort that contours to a healthy spinal curvature. A hybrid mattress is usually composed of layers of latex or memory foam over steel coils. This helps reduce pressure and conforms to your body, unlike an innerspring mattresses that tend to tends to sag. Comfort Hybrid mattresses give you