https://wifidb.science/wiki/7_....Secrets_About_Double
Mattresses Double Double beds (also called full mattresses) were the only sizes of mattresses available prior to the time queen and king mattresses became popular in the 1950s. Today, these beds are great for small rooms that require the comfort of a bed without taking up a lot of area on the floor. You can easily find them on the internet. They are also suitable for teenagers and adults who live on their own. Comfort A comfortable bed is vital to a restful night's sleep and mattresses