A full size mattress, also known as a double or standard mattress, is roughly 54 inches wide and 75 inches long. A full size mattress is not considered large enough for two adults to sleep comfortably.Continue Reading
When two people sleep on a full size mattress, there is only 27 inches for each person. This is the same width as a standard crib. Another problem that can occur with full mattresses for adults is the length may not be long enough.
Full size mattresses are ideal for children and young adults who are not tall enough for the length of 75 inches to be an issue.Learn more about Beds & Mattresses