full
A full-size mattress, also known as a double, measures 54 inches wide by 75 inches long and is best suited for single sleepers who want more space than a twin but don’t need the size of a queen. It’s an excellent option for teens, college students, or adults with smaller bedrooms. Full mattresses are also commonly used in guest rooms due to their affordability and manageable size. While it can technically fit two people, it’s best for solo sleeping.