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Sealy Harlow Ortho Plus Mattress

Sealy Logo
From£314.95

up to

20% off

Comfort trial

Comfort fillings

Firmness rating

Support system

Give your back the support it needs. The Harlow Ortho Plus provides a firm orthopaedic support to soothingly align your spine.

PostureTech Core Support Springs
PostureTech Core Support Springs

An innovative spring design from the specialists at Sealy that uses unique shapes and varied tension to provide excellent full-body support and pressure relief.

Orthopaedic support
Orthopaedic support

Helping to promote a healthy sleeping position. Orthopaedic support is specially designed to provide enhanced spinal alignment, joint support and improve posture.

Soft White Fibres
Soft White Fibres

Soft synthetic fillings create an incredible cosy feel. These fillings are durable and resilient, maintaining its shape and quality. A great balance between comfort and value for money.

Damask cover
Damask cover

A damask cover is a finely woven and durable fabric that is soft to touch. This cover doesn't retain heat and has a long-lasting performance.

Single-sided
Single-sided

With a single-sided mattress, there's no need to flip. Simply rotate every few months to care for your mattress. Fuss free mattress maintenance!

Firm
Firm

Firmer and more supportive

26cm deep
26cm deep

About 10.2 inches deep. Depth is an important factor when buying a mattress as it can affect the suitability for particular bedding, mattress toppers and bed frames.

5 Year Guarantee
5 Year Guarantee

For your peace of mind

Handcrafted in the UK
Handcrafted in the UK

Expertly handcrafted in the UK. This product helps to support our economy and helps to reduce environmental impact.

Fire Resistant
Fire Resistant

This product conforms to BS7177: 2008, for use at home

National Bed Federation Approved Brand
National Bed Federation Approved Brand

For the highest standards of quality and safety

Reviews

4.5/5

out of 352 reviews onTrustpilot logo

Product review stars

Customer Reviews Summary

summarised by AI

1 starsShiv
31 January 2026

Verified Purchase

Reply from MattressOnline.co.uk, 1 month ago

Hi Shiv I am sorry you are not finding your mattress comfortable - we appreciate the feedback. The mattress you have purchased does come with a 60-night Comfort Trial; if you are not finding it comfortable you would be more than welcome to exchange this for something more suitable. If you would like to make contact with our Customer Service team on 01709 780881 or customerservice@mattressonline.co.uk, we can discuss the options with you. Kind regards Charlie

2 starsFlorida
7 December 2025

Verified Purchase

5 starsJohn
13 August 2025

Verified Purchase

5 starsNgozi
24 June 2025

Verified Purchase

3 starsM
2 May 2025

Verified Purchase

3 starsSally
11 January 2025

Verified Purchase

4 starsManu
8 January 2025

Verified Purchase

1 starsKelly
20 October 2024

Verified Purchase

5 starsFiona
8 October 2024

Verified Purchase

2 starsKashyap
19 May 2024

Verified Purchase

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