Sofa bed mattress size is a single piece of furniture that serves as both a traditional sofa and as a bed. The sofa bed mattress is a specially designed mattress that fits in the sofa frame. A sofa bed saves space because the bed part of the furniture is tucked away inside the sofa and pulled out only when needed.
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Mattresses designed for sofa beds size are available in three standard sizes: twin (also known as single), full and queen. These are also standard sizes available in traditional mattresses. The standard dimensions for sofa mattresses are as follows: twin – 36 inches by 72 inches, full – 52 inches by 72 inches and queen – 60 inches by 72 inches. Some mattress makers can offer a super queen size or queen size XL which is five inches longer than the regular queen size mattress. Mattresses made for sofa beds are also thinner than traditional mattresses. This thinness allows the mattress to be flexible and fold up when the bed frame portion of the sofa bed is folded for storage.
Sofa mattresses size come in a variety of styles and designs. These styles include a variety of coil springs, air coil springs and even memory foam layers attached to some premium mattresses. The flexible material and the frame of the mattress itself are designed to fit into the collapsible metal bed frame which is connected to the sofa frame. Some sofa makers move away from the traditional sofa bed with a metal frame attached to a mattress. Modern sleeper sofas have patterns that range from fold down the back that makes the sofa flat or pillow system that folds out with a separate mattress.