The Value of a Mattress Double <img width="429" src="https://cdn.freshstore.cloud/offer/images/476/2810/comfy-living-4ft6-double-memory-foam-bonnell-10-mattress-2810.jpg"> A double mattress measures 54 inches wide by 75 inches long. It is one size bigger than a twin. This size is ideal for those who want more space than a twin but not as big as a queen. This is a gre
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