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Sealy Steeple Ortho Plus Mattress

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From£399

up to

30% off

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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.

Features and Benefits

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.

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

  • 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

100-Night Comfort Trial

This mattress comes with a 100-Night Comfort Trial - like all of our mattresses!

The trial lets you test your mattress for up to 100 nights. If it's not quite right for you, you can exchange it for a new one. To be eligible for the Comfort Trial, you'll need to purchase a mattress protector from MattressOnline with your new mattress.

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're not happy with the feel after 30 nights, simply contact our Customer Service Team, and we'll arrange a mattress exchange.

Click here for more info about our 100-Night Comfort Trial.

Videos

Sealy Steeple Product Video

Delivery

Check your Delivery Location

We deliver across the UK, with some remote areas offering alternative delivery options. Enter your postcode below to check which delivery options are available in your area.

Enjoy fast, reliable UK delivery with a delivery time slot confirmed on the morning of your delivery, live tracking and drop-off at your front door - or building entrance if you live in an apartment.

Delivery by Location

England
FREE
Delivery is free across England. Select postcodes in Cornwall, Cumbria and Lancashire are delivered to on set days rather than next day.
Wales
FREE
Delivery is free across Wales. Select postcodes are delivered to on set days rather than next day.
Scotland
FREE or £40
The majority of Scottish postcodes are free, including Glasgow and Edinburgh. Select areas, including Aberdeen, Dundee, the Highlands and the islands, have a £40 charge. Select postcodes also require a longer delivery lead time.
Northern Ireland
£60
All BT postcodes have a £60 delivery charge and require 3 working days for delivery.

Please use the postcode checker above for delivery information accurate to your address. For more information, head to our Delivery Page.

Upgrades & Extras

Delivery to a Room of Your Choice
£20.00
We'll take the item to a room of your choice (excludes unpackaging)
Mattress Recycling
£35.00
We'll collect your old mattress and recycle it when we deliver your new one.

Specification

Mattress Features

FirmnessExtra firm
Comfort fillingsSoft White Fibres
Support systemPostureTech Core Support Springs
Back careOrthopaedic support
Edge support
CoverDamask cover
Turning handles
Double-sided
Guarantee5 years

Dimensions

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

Please allow for a tolerance of +/- 2cm

Awards & Accreditations

Handcrafted in the UK
Approved by the National Bed Federation
Fire resistanceConforms to BS7177: 2008, for use at home

Reviews

4.7/5

out of 1,369 reviews onTrustpilot logo

Product review stars

Customer Reviews Summary

summarised by AI

5 starsMrs Robertson
3 October 2026

Verified Purchase

5 starsGillian
4 September 2026

Verified Purchase

4 starsAnil
31 August 2026

Verified Purchase

5 starsJohn
18 August 2026

Verified Purchase

5 starsCraig
7 August 2026

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5 starsTrusted Customer
7 August 2026

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5 starsCarol
3 August 2026

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5 starsMr M
24 July 2026

Verified Purchase

1 starsNick
21 July 2026

Verified Purchase

5 starsAlistair
13 July 2026

Verified Purchase

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