A trundle bed is a type of bed that has two sleeping areas, one below the other, to maximize space in a room. The top bed is usually a standard size while the bottom bed is slightly smaller and has casters so it can be easily slid under the top bed when not in use. This design can create two separate beds for two people or one large double bed for a single person.

The trundle bed is often used in children's rooms or small guest rooms, as it allows for an extra bed without taking up too much space. It can also be used in small apartments or studios where space is limited.

The trundle bed can be made from different materials such as wood, metal or rattan, and can be decorated with different styles and designs to match the decoration of the room. Some trundle beds also come with drawers or storage compartments under the lower bed to store extra blankets, pillows or sheets.

In summary, the trundle bed is a practical choice for limited spaces, providing additional sleeping space without taking up too much space. It can be made from different materials and decorated with different styles to suit the bedroom decor.