Full Size Mattress

A full mattress, also known as a double mattress, measures approximately 54 inches wide and 75 inches long. It is wider than a twin mattress but narrower and shorter than a queen mattress. This size provides ample space for a single sleeper to stretch out comfortably and can also accommodate two people, though it might be a bit snug for regular use by couples. 

People often choose a full mattress for several reasons. It's a great option for guest rooms, teenagers, or single adults who want more sleeping space than a twin offers. It's also a popular choice for smaller bedrooms where a larger bed might take up too much space. Additionally, full mattresses tend to be more affordable than larger sizes, making them a budget-friendly option for many households.