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Sealy Steeple Ortho Plus Mattress

Sealy Logo
From£384.95

up to

35% off

Comfort trial

Comfort fillings

Firmness rating

Support system

Sealy's PostureTech Core Support Springs merge with zoned PowerPack technology to provide orthopaedic lumbar support and a premium firmer feel.

Reasons to Buy

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.

Extra Firm
Extra Firm

Our firmest rating. Highly supportive with a very firm, sturdy feel

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.

Reinforced mattress edge
Reinforced mattress edge

Durable edge-to-edge support provides a maximised sleeping surface for a more secure sleep. Sit and lay comfortably right to the very edge with zero 'roll-off' sensation.

Includes turning handles
Includes turning handles

Stitched into the mattress border, turning handles are there for easier moving and turning. When caring for your mattress, simply use the handles provided for ease of use.

Tufted
Tufted

A traditional and elegant design that holds fillings in place whilst enhancing the stability of the mattress. The luxurious tufting ensures zero shifting, shape loss or sagging.

29cm deep
29cm deep

About 11.4 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.

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.

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

Description

The top of the new Sealy Ortho range is the Sealy Steeple Ortho Plus Mattress. Introducing brand new technology for unparalleled orthopaedic support.

Top-rated!

Here at Mattress Online, we've given this mattress our own stamp of approval as it's one of our Top Picks for 2025! We're confident you'll love this mattress and everything it has to offer, so why not treat yourself today.

Sealy support

The unique PostureTech Core Support spring system has been researched by medical professionals. Unlike traditional pocket springs, Sealy PostureTech Support springs get firmer under pressure. Providing tailored support for your whole body. Each spring can move to give responsive support focussing on the heaviest parts of your body. These springs are twice tempered which is the process of unique heat treatment that strengthens and enhances the spring structure. Adding incredible durablity and stability to the mattress.

Ortho packed

Zoned into three sections, the middle third of the mattress contains Sealy PowerPack technology. Denser springs within this zone provide added lumbar support for orthopaedic relief.

On the edge

Sleep or sit right on the edge of your new mattress, with no sag or roll off. The super sturdy reinforced sprung edge prevents that feeling of having a wall at the edge of your mattress. Instead, it cradles your weight for ultimate pressure relief.

A fresh look

The ultra comfortable mattress top is hand tufted for the perfect firmer feel. Finished with a striking modern damask cover for that plush touch. The mesh vented sides allow for enhanced breathability, helping your mattress stay clean and cool for longer.

Made to last

This mattress is double sided and can be flipped every few months to maximise comfort and longevity. The four vertical handles along the mattress edge make it easy to lift and manoeuvre with two people.

100% Recyclable

All Sealy Ortho mattresses are 100% recyclable at the end of their use, with no components going to landfill. Buy in confidence with the 5 Year manufacturer Guarantee.

Benefits

  • A Top Pick for 2025!
  • PostureTech Core Support twice tempered springs deliver responsive support
  • Firm feeling orthopaedic mattress
  • PowerPack zones for lumbar support
  • Unique EdgeGuard foam support improves durability and sleep space
  • Stylish new look damask cover and cosy tufting
  • Mesh edge enhances breathability
  • Double sided - turn every three months
  • Four built in turning handles
  • 100% recyclable
  • Depth: 29cm
  • Handmade in the UK
  • 5 Year Guarantee

    Weights: Single: 22kg, Small Double: 29kg, Double: 33kg, King Size: 38kg, Superking: 45kg, Superking Zip and Link: 46kg

60-Night Comfort Trial

This mattress comes with a free 60-night comfort trial - like all of our mattresses!

The trial allows you to test your mattress for 60 nights, and if you don't like it, you can swap it!

It can take some time to get used to a new mattress, which is why we ask you to sleep on your mattress for 30 nights. If you don't like the feel of your mattress after 30 nights, simply get in touch! We'll be happy to swap it for you.

Click here for more info about our 60-night comfort trial.

Videos

Sealy Steeple Product Video

Specification

FirmnessExtra firm
Comfort fillingsSoft White Fibres
Support systemPostureTech Core Support Springs
Back careOrthopaedic support
Edge supportYes
CoverDamask cover
Turning handlesYes
Double-sidedYes
Guarantee5 years
Awards & accreditationsHandcrafted in the UK, Approved by the National Bed Federation
Fire resistanceConforms to BS7177: 2008, for use at home
DownloadsSealy Product Care and Guarantee

Dimensions

SizeWidthLengthDepth
Single90cm190cm29cm
Small Double120cm190cm29cm
Double135cm190cm29cm
King Size150cm200cm29cm
Superking180cm200cm29cm
Superking Zip and Link180cm200cm29cm

Please allow for a tolerance of +/- 2cm

Delivery

The following delivery methods apply to mainland England and most of Scotland, Wales and Northern Ireland. Please read our delivery page for more information.

Next day delivery (weekdays only)

Order before

FREE

Weekday of your choice

Order up to 60 days ahead

FREE

Weekend

On Saturday or Sunday of your choice

£17.50

Delivery to the front door of your building

Free upgrade for Small Double, Double, King Size, Superking and Superking Zip and Link to your room of choice

Yes

Two-hour delivery time slot

We’ll let you know on the day before your delivery

Yes

Call to let you know we’re on our way

On your delivery day

Yes

Delivery to your room of choice

Free upgrade for Small Double, Double, King Size, Superking and Superking Zip and Link

£20.00

Mattress recycling

We'll take away your old mattress

£35.00

Delivery is on an all-day service, 7am - 8pm for mainland England and most of Scotland, Wales and Northern Ireland.

Need further information? Please visit our Delivery page.

Reviews

4.7/5

out of 1,337 reviews onTrustpilot logo

Product review stars

Customer Reviews Summary

summarised by AI

5 starsShin
8 March 2026

Verified Purchase

5 starsTrusted Customer
2 March 2026

Verified Purchase

3 starsRobert
11 February 2026

Verified Purchase

Reply from MattressOnline.co.uk, 1 month ago

Hi Robert I am sorry that you experienced this level of service from our delivery partners and we appreciate you bringing this to our attention. This is not the level of service we have come to expect from our delivery partners; I will raise this as a complaint with AIT, in order to prevent this type of issue from happening again in the future. Sorry again for any disappointment caused. Kind regards Charlie

5 starsTrusted Customer
2 February 2026

Verified Purchase

5 starsKonrad
23 January 2026

Verified Purchase

5 starsJon
7 January 2026

Verified Purchase

4 starsSuper
31 December 2025

Verified Purchase

5 starsBaolian
15 December 2025

Verified Purchase

5 starsTrusted Customer
15 December 2025

Verified Purchase

5 starsMr D T R Evans
13 December 2025

Verified Purchase

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