---
title: "Sleep Trial"
description: "What a mattress sleep trial is, how long UK trials run, and the common rules to read before you buy."
url: "https://bedguide.co.uk/glossary/sleep-trial/"
category: "glossary"
primary_entity: "sleep trial"
date_published: 2026-10-21
date_modified: 2026-10-21
---

# Sleep Trial

> A sleep trial is a shop’s time limit for returning or swapping a mattress after you sleep on it at home. Trials often run from 14 to 200 nights, depending on the seller. They are shop rules, not a legal grade of quality. Many need a protector, a minimum number of nights first, and set collection rules.

**Definition.** A sleep trial is a shop’s set time to try a mattress at home and return or swap it if you dislike the feel.

Also called: mattress trial, comfort guarantee, trial period.

A trial is about comfort. A warranty is about faults. They are separate
promises.

Your legal right to cancel most online orders within 14 days of delivery is
separate from any trial.

Full guide: [mattress trial periods explained](/care/mattress-trial-periods).
Also: [mattress warranty explained](/care/mattress-warranty-explained).

---

Source: https://bedguide.co.uk/glossary/sleep-trial/ · 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.