A single bed is a type of bed that is designed to accommodate only one person. It typically measures around 3ft wide and 6ft long, although there are variations in size depending on the manufacturer or model. The mattress for a single bed is also smaller than those used for larger beds such as queen-sized or king-sized beds. Single beds are often found in guest rooms, children's bedrooms, and dormitories, where space is at a premium. They can be easily moved around and are ideal for people who live alone or have limited space in their home.