How do daybeds, trundle beds, and twin beds differ?

Daybeds are twin beds that has the frame go around the back fo the bed. Trundle beds have a slide out bed underneath. They all take twin size mattresses.

A daybed doesn't look like a traditional bed. It is designed with a headboard and footboard of the same height, as well as a long side of the same height to create what looks more like a sofa. One side of the bed is open to allow people to sit on it. The piece is usually made up with a lot of large pillows for added comfort. "Twin bed" refers to size. A twin mattress is 39 inches wide and is designed for one person. A twin bed accommodates a twin mattress. Twin beds are often set up in pairs in a room, hence the "twin" label. You'll find twin-size mattresses in dorm rooms, bunk beds and daybeds. A trundle is a low frame that accommodates a twin mattress. The trundle is stored under a standard height (or higher) twin bed frame or under a day bed. The trundle is usually hidden by a bed skirt. It is pulled out when extra sleeping space is needed.