Question: what is the difference between a double mattress and a queen?
Answer: A Queen bed is 6" wider than a double bed, allowing more room for each person, but still 9" less than a twin bed. Double beds (also known as full) were the most common for two to sleep in until the 1960s. They're only 15" wider than a single bed, leaving only 27" of sleep space for each of two adults.