A full size bed, also known as a double bed, measures 54 inches wide by 75 inches long. It provides more sleeping space than a twin bed, making it suitable for single sleepers who enjoy extra room or for couples who prefer a cozier option. This size is popular in smaller bedrooms and guest rooms. Full size beds are compatible with various bedding options, including mattresses and bed frames. They are often used in apartments and homes where space is limited. Additionally, full size bedding sets are widely available, making it easy to find styles that match personal decor preferences.