A daybed is a twin-size frame with a backrest and two side rails, so it works as a sofa or seating area during the day and a full bed at night. It’s a space-smart pick for kids’ rooms, guest rooms, and studies where one piece needs to do two jobs.

A standard trundle is a low mattress on casters that rolls out from beneath the daybed, close to the floor. A pop-up trundle lifts as it pulls out so its surface rises level with the main mattress — you can push the two together for a larger sleep surface, which is why it’s popular for older kids and overnight guests.

Most daybeds are built for a standard twin mattress, and a trundle underneath typically takes a twin as well. Always check the individual product’s specs, since a few designs are sized differently.

Yes — that’s the point of the design. Placed against a wall with a few throw pillows, a daybed reads as a sofa or bench, then serves as a full bed when guests stay over. It’s a common choice for guest rooms, home offices, and shared kids’ rooms.

They’re a great transition and space-saver for a kids’ room: the raised sides give a sense of enclosure, a trundle adds a spot for a sibling or friend, and the sofa-by-day setup frees up floor space for play. You’ll find our full selection online, with select styles on display in store, plus white-glove delivery and free in-home design help in Mathis Home’s store regions.