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Sealy Steeple Ortho Plus Mattress

4.7/5
PostureTech springs at its core deliver properly firm support built for durability.
iconFirmer
iconFibre Fillings
iconPostureTech
icon29cm depth
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£449
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The Verdict

What 188 sleepers really think

Rated 4.7/5 from 188 verified reviews
The Sealy Steeple Ortho Plus has been lauded for its excellent quality and comfort. Users highlighted its firmness which is often appreciated by those with back problems. Some found it beneficial for improving their sleep quality. The mattress's depth and support were also remarked upon positively. Several customers described it as the best mattress they've ever slept on. Despite being firm, it was also acknowledged for having a level of softness and comfort that prevented it from feeling hard.

AI-generated from the text of customer reviews

Why This Mattress

Why buy the Sealy Steeple Ortho Plus Mattress?

Every mattress is different. Scan for the ones that sound like you — if two or more fit, this is your mattress.

Best For
Back + Stomach
Back or front, never sure?
Steady, even support that keeps your spine level whether you settle on your back or your front.
Helps with
Allergies
Wake up itchy or sneezy?
Hypoallergenic fillings and covers help keep dust mites and allergens at bay - ideal for allergy-prone sleepers.
Helps with
Pressure Relief
Achy hips or shoulders?
Cushioning comfort layers spread your weight evenly, easing pressure around hips and shoulders.
Thermal Control
All Season
Hot in July, cold in January?
A balanced build that doesn't run hot in summer or cold in winter, so it works all year round.
Suitability
Adults
Buying for a grown-up bed?
Built for full-grown sleepers, with the depth and support to take adult weight night after night.
How It Feels

How firm is it?

Firmer

Firmer is the level of support to the body, suitable for average to heavily weighted people. This is not a comfort rating.

About the Brand
4.68 brand rating

Sealy is famous for its award-winning mattresses, crafted through 20 years of collaboration with the International Orthopaedic Advisory Board. Featuring innovative technologies like the AlignSupport® Coil System and memory foam, Sealy ensures targeted support and comfort for a restful night’s sleep for every type of sleeper.

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Real Sleepers

What our customers say

4.7
Product Rated 4.7 Stars
188 reviews
Average Customer Ratings
Comfort4.6
Durability4.8
Quality4.8
Value for money4.6
Rating Snapshot
5 stars
146
4 stars
32
3 stars
6
2 stars
1
1 stars
3
Excellent146
Great32
Average6
Poor1
Bad3
Rick Cullen
Customer Rated This 5 Stars 5/5
29 Dec 2023
This is my second orthopaedic mattress from Sealy. The last one I’ve bought in 1987 and have just replaced it with this one, whilst my old mattress gave me a good night sleep the new one is absolutely out of this world, I had noticed a couple of twinges in my back, so decided to treat myself all the back twinges have now gone completely. I get a fantastic night sleep And with the new pillows have no aches and pains in my neck, highly recommended, it is not worth going cheap on something you spend half your life on. Hopefully I’ll live long enough to buy a third mattress excellent product and made in the UK by a family company.
Comfort5
Durability5
Quality5
Value5
Jason Perry
Customer Rated This 5 Stars 5/5
06 Feb 2024
Brought this extra firm mattress to help with on going hip pain. I Brought a medium firm mattress last October that has proved to be too soft. I was a bit worried extra firm would be too firm but a mattress will only soften with use. Having the 60 day trial allowed be to take a risk on it. So far so good, only been a week. Mattress has good support all the way to the edge without being uncomfortable. Being double sided is a plus to me as it will last longer then non turn mattress. Communication was great and I was contacted regarding a slight delay in delivery. Overall very happy so far.
Comfort5
Durability5
Quality5
Value4
Emma Clark
Customer Rated This 5 Stars 5/5
10 Nov 2025
This mattress is a game changer, my aches and pains are so much less in the mornings. I sleep like a log most nights now, a firmer bed is so much better for my back pain and aching legs. Highly recommend this mattress and the excellent service from Mattressman!
Value5
Quality5
Durability5
Comfort5
Amanda Conquest
Customer Rated This 5 Stars 5/5
08 Jun 2025
After having a memory foam mattress by Eve which got very uncomfortable then a cheapy Jaybe spring mattress, the sealy one for us is amazing, extremely firm but so comfortable and very good value for money.
Comfort5
Value5
Durability5
Quality5
Mark Congram
Customer Rated This 5 Stars 5/5
08 Jan 2026
Good quality mattress. Improved my aching back. Now get a decent sleep. Bought a mattress protector and been rotating as instructed and it’s been perfect. For the money it’s five star.
Value5
Quality5
Durability4
Comfort5
R Fairs
Customer Rated This 5 Stars 5/5
01 Aug 2023
Had to get a new mattress as my husband has sciatica and our Simba mattress we bought 2 years before did not given any support. Highly recommend this Sealy millionaire orthopaedic.
Comfort5
Durability5
Quality5
Value5
Viewing 1 to 6 of 188
Our Promise

The Steeple Ortho Plus Mattress has

A 60-night sleep trial Sleep on it at home — love it, or exchange it between nights 30 and 60 (£50 fee applies).
A 5 year guarantee See exactly what's covered, and for how long.
Price Match Promise Seen it cheaper somewhere else? We'll match it.
Good To Know

Frequently asked questions

Is the Steeple Ortho Plus mattress suitable for allergy sufferers?
Yes, the Steeple Ortho Plus mattress is recommended for allergy sufferers due to its hypoallergenic fillings and fabric.
What type of fillings does the mattress have?
The mattress features white fibre fillings made from 100% hypoallergenic polyester, which are very durable and ideal for those with hay fever.
How is the sleeping surface constructed?
The sleeping surface is hand tufted with buttons evenly distributed, which helps keep the fillings together and adds tension to the springs.
What kind of support does the open coil spring unit provide?
The open coil spring unit is made from a continuous length of wire, offering a firmer feel, making it a suitable choice for budget-conscious customers.
Can I flip the mattress over?
Yes, the Steeple Ortho Plus mattress is designed to be double-sided. You can turn and rotate it regularly to ensure even wear.
What are the benefits of the double-sided design of the Sealy Steeple Ortho Plus mattress?
The double-sided design of the Sealy Steeple Ortho Plus mattress enhances its longevity by allowing you to rotate and turn it regularly, which helps maintain its firmness and support over time. This feature prevents wear in any one area, ensuring the mattress remains comfortable and effective for a longer period. Additionally, this design helps evenly distribute wear, which can contribute to better overall durability and performance.
What is the fire safety rating for the Sealy Steeple Ortho Plus mattress?
The Sealy Steeple Ortho Plus mattress has a Domestic Flammability Rating of Source 2. This means it has a low hazard and is suitable for regular use in your home.
How does the PostureTech spring unit specifically support the lumbar region?
The PostureTech spring unit in the Sealy Steeple mattress is designed to provide targeted support, particularly for the lumbar region of your back. This system includes a Powerpack support situated centrally, which helps to ensure that your lower back receives the additional firmness it needs for healthy spinal alignment while you sleep. This feature makes the mattress particularly beneficial for back and stomach sleepers, promoting a more comfortable sleep experience.
What is the advantage of the Edge Guard technology in the Sealy Steeple mattress?
The Edge Guard technology in the Sealy Steeple mattress provides high-density foam support around the spring unit, ensuring consistent edge-to-edge support. This feature prevents sagging over time, enhancing the durability of the mattress and allowing you to use the full sleeping surface without compromising comfort. Additionally, it contributes to the overall stability of the mattress, making it suitable for users who appreciate a firmer feel.
What materials are used in the construction of the Steeple Ortho Plus mattress?
The Sealy Steeple Ortho Plus mattress is handcrafted in the UK using high-quality materials to ensure durability and comfort. Its construction features the innovative PostureTech spring unit for targeted support along with Edge Guard protection, which consists of high-density foam wrapped around the spring unit to provide edge-to-edge support. This combination of materials not only enhances the mattress's longevity but also contributes to a firm sleeping surface for optimal spinal alignment.

60-night sleep trial: exchanges only, not refunds. Activated by purchasing a mattress protector at the point of order. Request your exchange between nights 30 and 60 of the trial; a £50 exchange fee applies. Full terms.

Recommendation rate: the percentage of verified Trustpilot reviews for this product with a rating of 4 stars or more, rounded down.

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