Twin Mattresses

A twin-size mattress, often referred to as a single mattress... has a length of 74 inches and a width of 38 inches. Twin beds are most commonly found in university dorm rooms, kid's rooms and guest bedrooms. It is also the ideal size for bunk beds. The dimensions of a twin mattress can comfortably sleep one person, but the width is not ideal for sleeping with a partner, although this feat can be accomplished if need be.