---
title: "Day Bed"
description: "What a day bed is, what mattress size it takes, and how it pairs with a trundle for guests."
url: "https://bedguide.co.uk/glossary/day-bed/"
category: "glossary"
primary_entity: "day bed"
date_published: 2026-10-21
date_modified: 2026-10-21
---

# Day Bed

> A day bed is a single bed framed on three sides, so it can look like a sofa during the day. At night it is a normal single bed. Many day beds have a trundle underneath for a second guest. Most take a UK Single mattress of 90 × 190 cm, but check the exact size the frame needs.

**Definition.** A day bed is a single bed framed on three sides. It looks like a sofa by day and works as a bed at night.

Also called: daybed, day-bed.

Use a mattress that suits sitting as well as sleeping, as the edge gets more
use.

Add cushions along the back to make it comfortable as a sofa.

Full guide: [guest room, day bed and
truckle](/beds/guest-room-day-bed-and-truckle).

---

Source: https://bedguide.co.uk/glossary/day-bed/ · BedGuide — independent UK bed guide; paid links are labelled (see /how-we-make-money/). Facts checked against official sources where possible; see https://bedguide.co.uk/editorial-policy. Report an error: https://bedguide.co.uk/corrections.