Full mattresses, also called double mattresses, measure 54" x 75", providing a comfortable solo sleeping without the floor space often required for larger-sized mattresses. Full mattresses fit comfortably in bedrooms between 9' and 10' wide and work perfectly for guest rooms or smaller spaces. Best suited for single adult sleepers, teenagers, and college dorm rooms, full mattresses offer a practical balance of comfort and space efficiency. Browse our entire selection of Full-sized mattresses below.