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TheraPur vs Sealy Mattress Reviews

Compare TheraPur and Sealy mattresses side by side: owner satisfaction, support, durability and price, based on aggregated customer reviews.

Checked byBecky Reeve, Staff Writer, Mattress Expert
SourceCompiled from WantMattress review data

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Brand

TheraPur

4.7/5Owners2,992 reviews
Price range£499 – £1,999
Brand

Sealy

4.7/5Owners10,381 reviews
Price range£314 – £3,120

On aggregated owner reviews the two are level at 4.7 out of 5, so the choice comes down to price, trial and guarantee.

Becky’s take

By Becky Reeve

Checked against current models and prices in October 2026

Choose Therapur over the Sealys most people buy, and choose Sealy only if you want latex. The Steeple Ortho Plus and the Mellbreak Ortho Plus are open coil mattresses with an orthopaedic label. Open coil is one wire frame across the whole bed, so you feel your partner move and the middle dips first, and I wouldn't put two adults on one. Therapur, Dreams' own brand, is gel foam over pocket springs at every tension. That is a better build, and both are in the same shops.

Sealy has far more reviews, and most of the people who left them bought the open coil. Sealy also has latex, which Therapur doesn't make. You'll find it in the Newton and the Wilton, which are firm, and the Bronte, which is medium. Latex is cool and bouncy, a different class of mattress from the ortho beds. If you want latex, buy the Sealy and ignore the rest.

If you want plain, firm pocket springs with no foam at all, neither brand does that, so look at Sleepeezee, a Kent maker whose Deluxe 1000 and Luxury 1400 do that job without fuss.

Head to head

TheraPur has sprung throughout, every model a hybrid; Sealy has 20 of its 57 mattresses sprung and 8 all memory foam. Only Sealy offers latex, in 11 models. TheraPur runs from soft-medium to extra firm, and Sealy runs from soft-medium to extra firm. Sealy is clearly the cheaper way in; TheraPur's range starts well above it. But at the top end Sealy goes further, so it also has the more premium options. Sealy's owner score rests on far more reviews (10,381 against 2,992), so treat TheraPur's number as the less settled of the two.

How they differ

TheraPurSealy
Mattresses we list757
Price range£499 – £1,999£314 – £3,120
Owner rating
4.7/5Owners2,992 reviews
4.7/5Owners10,381 reviews

Mattresses only. Owner ratings are the review-weighted average across each brand’s mattresses on UK retailer sites. Prices read 4 November 2026.

TheraPur

Therapur mattresses have been around for a number of years now as a staple of the Dreams retailers core lineup. Sold exclusively through the retailer, this brand sits at the mid-high end range and commonly features high quality pocket springs as a base layer with gel often accompanying the comfort layer. Ideal for those that want to be kept cool while they sleep, this range of mattresses is mostly praised by owners for comfort and for sleeping cool, though a minority found it hot.

Therapur has a vast array of different mattresses in different tensions helping to ensure that there is something for everyone regardless of how you sleep and your own preference.

Sealy

Sealy has formerly separated from Silentnight, who once managed the UK arm of the popular retailer and will now be re-acquired by Tempur Sealy International. For those who don’t know, Sealy is the world's biggest bed brand that’s not down to luck, Sealy mattresses are highly regarded and at a price point that is achievable for the vast majority of people. What’s more, the company produces handmade beds right here in the UK using some of the finest fillings and upholstery.

Sealy’s Posturepedic technology makes it ideal for those with back and neck pain looking for that additional bit of support, becoming the only partner to be approved under the Orthopaedic Advisory Board

TheraPur owner satisfaction

Owner reviews of Therapur mattresses are mostly positive, and comfort is the thing owners praise most. One owner wrote “Absolutely worth the money, so comfortable, cool, amazing quality.” Several mention waking with less back or hip pain. The gel comfort layer sits between the springs and your body, and most owners who mention temperature say it keeps them cool, though a minority found the opposite: one wrote “Not cooling at all,really hot to sleep on”.

The commonest gripe is tension: some owners bought a medium and found it too firm, or firmer at home than the one they tried in the shop. One wrote “Mattress was brought as a medium and is too firm for me and my wife”. A smaller number report a dip forming where they sleep within the first year or two. Therapur mattresses come under Dreams’ 100-night comfort guarantee, which is an exchange between nights 30 and 100 rather than a refund, so a wrong tension can be swapped.

TheraPur supportiveness

Owner reviews of Therapur mattresses are mostly positive, and comfort is the thing owners praise most. One owner wrote “Absolutely worth the money, so comfortable, cool, amazing quality.” Several mention waking with less back or hip pain. The gel comfort layer sits between the springs and your body, and most owners who mention temperature say it keeps them cool, though a minority found the opposite: one wrote “Not cooling at all,really hot to sleep on”.

The commonest gripe is tension: some owners bought a medium and found it too firm, or firmer at home than the one they tried in the shop. One wrote “Mattress was brought as a medium and is too firm for me and my wife”. A smaller number report a dip forming where they sleep within the first year or two. Therapur mattresses come under Dreams’ 100-night comfort guarantee, which is an exchange between nights 30 and 100 rather than a refund, so a wrong tension can be swapped.

TheraPur durability

Durability remains impressive for the Therapur line up, however, we were disappointed that the entry Polar models carry only a 1 year guarantee where the higher models carry 10 years, particularly given the non-budget price tag associated with the products. That said, many settlement and durability issues that do crop up with all mattresses are often due to a manufacturing defect which will typically appear within that first year of ownership. As such, the one year guarantee on those models, while not ideal, catches the early defects, but not every owner is still covered when a dip appears: one owner of an entry Polar wrote “it is only 14 months old . It is showing signs of dipping where we sleep despite turning the mattress as instructed”.

Beyond the guarantee, durability itself seems to be good provided manufacturer care instructions are adhered to in the form of frequent rotation to ensure adequate and even settlement of fillings and springs. Failure to comply with the rotation guidelines for Therapur products can result in uneven settlement which is best avoided.

Generally, Therapur mattresses are hard wearing and durable with the combination of good quality pocket springs, hard wearing cover and gel comfort layer pairing fantastically to offer ultimate comfort that lasts.

TheraPur best offers

We've managed to find the following top deals from across the web on TheraPur mattresses.

Sealy owner satisfaction

Satisfaction is at the heart of what Sealy offers. Since their inception Sealy has offered numerous different base and comfort layers to try and appease all areas of the market. The company has largely remained successful in their plight thanks to their strong support within the mid-tier market. Owners are mostly happy with what they bought, and comfort is the thing they mention most often. Back pain easing comes up as well, with one owner writing "my backache has virtually disappeared now". The complaints are far fewer, and firmness is the main one: some owners found theirs harder than expected and a smaller number softer, with one calling it "Harder than the model we tried in the shop". Dips forming where people sleep are the other complaint that recurs.

Sealy supportiveness

The Sealy lineup includes everything from soft-medium through to firm tensions. The most popular in the range are the mediums which give the best overall support for most people, pairing well with the pocket spring support layer to offer full body contouring for all-round support without feeling too-firm.

For those looking for a bit more support, Sealy has firmness grades exceeding firm and entering extra-firm territory. We would personally recommend these only for specific circumstances as comfort is reduced slightly to better aid support.

Sealy durability

When it comes to durability Sealy performs in line with expectation. We do see a bit of fallout from some of the cheaper in the range, particularly the open coil sprung models which, combined with a single sided comfort layer often do not have long-lasting properties and may not afford as good value as initially perceived due to their reduced operating lifespan. Contrary to this is the excellent pocket sprung options on offer from Sealy, particularly when paired with a double sided comfort layer. A combination of these will ensure you get a long standing mattress that will last far better and in-line with the average expectancy where people typically look at replacing their mattress (7 years)

Sealy best offers

We've managed to find the following top deals from across the web on Sealy mattresses.

Owner reviews of TheraPur mattresses

5 Verified customer

After 10 years with our old OTTY mattress, it was definitely time for a change. I had started waking up with shoulder pain and knew we needed something more supportive, so we visited the store to find the right replacement. The service we received was outstanding. The sales advisor took the time to understand our needs and guided us through the different options without any pressure. I was feeling quite dizzy that day, and her kindness really stood out—she offered me some water and encouraged me to take my time rather than rushing the decision. We eventually chose the Therapur ActiGel Polar 2000 Combination Mattress, and it has been one of the best purchases we've made for our home. From the very first night, it felt incredibly comfortable and supportive. The mattress provides excellent pressure relief for my shoulders while still giving great overall support, and the cooling ActiGel layer helps keep the temperature comfortable throughout the night. We're both sleeping much better, waking up feeling more refreshed, and my shoulder discomfort has improved significantly. The combination of expert advice, excellent customer service, and a fantastic mattress made the whole experience a pleasure from start to finish. I would highly recommend both the Therapur ActiGel Polar 2000 Combination Mattress and the team who helped us choose it. Five stars from us!

4 KAREN GOLDING

I would not give this mattress any stars but the option is not given, we selected this mattress after using the sleep match machine which in Dreams own words (It's a super smart bit of wizardry that chooses the right mattress just for you and the way you sleep. ) this is the most uncomfortable hardest mattress I have ever had I explained to the sales advisor that I suffer with neck and spine problems and could not sleep on a hard mattress she said that the machine recommended a medium mattress we stupidly put our trust in this marvellous machines hands the sales advisor showed us various mattresses from the list that the machine had recommended we chose this mattress and was assured not to worry as we had the 40 days returns policy at no point was it explained that we would have to sleep on the mattress for 30 nights before it could be returned and loose the difference in money if you chose a cheaper mattress. Two days after receiving the new mattress we returned to the store saying I cannot sleep as the mattress is so hard my pressure points are numb and I have pins and needles we were told that the problem is out of there hands and I would need to contact customer services after finally getting through to customer services I was told that they would prefer us to sleep on the mattress for 30 nights to enable the springs to settle down I said when I tried the mattress in the store nobody told us to expect such a difference between the stores mattress and the one we would receive also on our second visit to the store my husband noticed that we had in fact been sold a firm mattress as I am so upset with the service we have received I asked for my money to be refunded I was told this would not happen I would need to choose another mattress and either pay the difference if it was more expensive or loose the money if it was cheaper and also pay for the delivery Please ensure when buying a mattress from Dreams you read all of the small print that you are given once you have made your purchase and also read the reviews on the website as you will see other people have had the same experience as myself, do use the Sleep Match machine as another sales advisor on our second visit to the store said how can a machine tell you what mattress you need I have been selling mattresses for years and do not go by what the machine says.

4 D Redmond

'Ive been very pleased with the TheraPur ActiGel Polar 2000 Combination Mattress. It offers a really good balance of comfort and support, and the ActiGel layer helps keep the mattress feeling cooler through the night, which has made sleeping much more comfortable. It provides enough cushioning to relieve pressure while still giving good support for my back. The build quality feels excellent, and the mattress has a premium feel. Motion transfer is fairly well controlled too, so movement from the other side of the bed isn't too disruptive. The only reason I'm giving it 4 rather than 5 stars is that it's quite substantial and took a little time to fully break in. It may also feel firmer than expected at first, but it becomes more comfortable after a short period of use. Overall, it's a high-quality mattress that delivers on comfort, support, and cooling, and I'd happily recommend it to anyone looking for a supportive mattress with a cooler sleeping surface.

1 Huw06

I tried this mattress a couple of times in the shop, and found it to be comfortable, with a supportive base but soft pillow top that you sunk into, giving a balanced feel. However, when it arrived, it felt considerably firmer than the one that I tried in store, with the pillow top not feeling as thick, and lacking the feeling that you could sink into it. I have had the mattress for 2 months, and in that time it has not felt like it was getting any softer, but I was very disappointed to find that the mattress is developing a not-insignificant sag in the middle (it was being used by a single person), to the point where if you try to sleep at the side, you can sense the slope towards the middle. After just 2 months this is incredibly disappointing, and does not bode well for the long term. In addition, the cooling technology works very well when you are lying directly on the mattress as you do in the shop, but by the time you have added a mattress protector (also by Therapur) and fitted sheet, you can't really notice the cooling benefits any more. Perhaps 1 star is a little unfair, someone who prefers a firmer mattress and is happy for it to be firmer than expected would not be as disappointed, but for me the noticeable dip towards the middle of the mattress is an issue that I could not overlook. I have submitted an exchange under the Comfort Guarantee scheme for a medium-firm Silent Night mattress, as I didn't want to risk the same sagging issues by swapping to a medium firmness mattress from Therapur.

1 Nick598754545

I had the previous version of this mattress—the Polar 800 in a double—which my partner and I loved. We found it comfortable, it helped us stay cool, and we always slept well on it. We wanted the same again, but Dreams had just discontinued it. We decided to buy this newer version and tried it in the shop. It felt a tad firmer, but it was difficult to tell in the shop. Since sleeping on it we can confirm this mattress is simply not a medium. It is like sleeping on the floor, it is so solid. We've kept persevering and even after 6 weeks, it is still so solid. There is no give to it. The is some give in the top layer but the springs are solid. I keep waking in the night with dead limbs. Both my partner, who is now pregnant, and I keep waking up feeling like we've slept on the floor with achy muscles and backs which we never had before. I think this would only start to feel Medium if you were 16 stone plus. Also, the mattress absolutely stunk for the first 2-3 weeks. The chemical smell was so awful it didn't feel suitable for humans to sleep on. We had to leave it to air in our spare room before we could use it. Luckily we kept our old mattress! It's really disappointing and I would not recommend this mattress. It's always such a shame when manufacturers change something for the worse. We are going to exchange it.

Owner reviews of Sealy mattresses

5 T Phillips

I’ve been sleeping on this mattress for a few nights now and I’m pleased to say it’s making a positive difference. I was hoping for something supportive and comfortable, and this mattress delivers on both fronts. What I like The medium-firm feel hits a nice balance: not so hard that you feel like you’re lying on a plank, yet firm enough to feel properly supported. The product’s description calls it “medium-firm” and highlights the balance between support and plushness. The cooling feature is visible: the mattress uses INFUSE™ Black Diamond Graphite foam (which I must admit sounded fancy to me) to help with temperature regulation. According to the spec it “keeps you cool while cushioning your hips and back”. On warmer nights I’ve noticed I’m less restless. Excellent support for back and hips: I wake up without the usual niggles around the lower back and shoulders that I used to get with older mattresses. The “AlignSupport® coils” and plant-based ComfortCore layer appear to be doing their job. Good edge support: the mattress doesn’t feel as though you’ll roll off when you get close to the edge, and the usable surface feels generous. That’s helpful when two of us are sharing it. Quality and build: the cover feels robust, the stitching seems neat, and while I won’t pretend to have dismantled it, it gives a sense of quality rather than a bargain compromise. Where there’s room for improvement (or things to know) It’s a bit heavier/setup-intensive than my old one: rotating or manoeuvring it takes a bit of effort. If you prefer a super soft, sinking-in feel (the “body-hug” kind) this mattress might feel a little firm. Some reviews of the same family of mattresses note that side-sleepers (especially lightweight ones) might find medium-firm less contouring than they’d like. As with many new mattresses, there was a short adjustment period for my body clock and sleep-muscles to adapt. The first two nights felt slightly unfamiliar; by night three I was into it. Cooling is better than my previous mattress, but if you’re a very hot sleeper I wouldn’t say it’s magic. The spec claims better temperature control but some users of related models still noted some heat retention. Verdict In my view this is a strong pick if you want a mattress that blends support with comfort, especially if you’ve got a back that lets you know when the mattress is doing a poor job. For someone like me (part-time mystic, allotment keeper, old bones) it feels like a good investment in sleep rather than just a piece of furniture. I’d say I’m waking up more rested, and that alone makes the change worthwhile.

5 Jeffrey N

Lying on a bed in a shop fully clothed for a few minutes is one thing. Lying on it for 8 hours in thin nightwear is something else. I tried the Newton bed in the shop and it seemed comfortable, although it may have been there years and hundreds of customers may have bounced on it. Once delivered (and Bensons were totally professional in that regard) I got backache after one night. Others have remarked their bed seemed firmer than in the shop. Dreams sell the same mattress but they call it Hagen and rate it very firm which it certainly is. I found I could get my hands behind the small of my back and exactly the same when I lay on the floor !! I also got cubital tunnel syndrome (hard bed pressed on shoulder and elbow causing pain down arm and little finger went numb !) A topper improved things a bit but if you need a topper to make your bed comfy you're probably lying on the wrong bed ! After a week of pain I decided to switch to a medium Newton which you wouldn't know existed if you only went in the store and didn't look online. I zoom called Bensons HQ who confirmed none of their shops displayed it. So why didn't I order a medium in the first place ? I didn't like the idea of buying a bed I hadn't tried first (if that is any guide) but in the end I was forced to ! Now medium doesn't mean soft. It just means slightly less firm !! I phoned Sealy HQ who explained the only difference is Newton Medium has firm and medium foam, not extra firm foam like their firm version. I'd give Newton firm a 9/10 rating for firmness and Newton Medium 7/10 although that may ease to a 6 in a few months. Incidentally I did consider the Bronte too. I had a pillow top but found it got frayed and torn after 6 years (I'm a restless sleeper), was heavier to turn, higher and the sheets didn't fit. As others have mentioned I found it warm to lie on after just 10 minutes so wondered how hot it would be after 8 hours. To be brutally honest I didn't think it worth an extra £400 which is a lot for a pensioner ! If you want a soft top buy a mattress topper for the Newton Medium and save yourself the extra expense. A final point, I found the Newton Medium somewhat lighter than the firm, probably due to the lack of hard heavy-duty foam.

1 Mr R

Absolutely horrible. This is a completely unbiased review after owning it for almost 4 months now, and rotating it around as per instructions. After trying out a few beds in various stores and doing some research into the kind of bed I wanted in an Extra Firm, this was one was the best *when I tried laying down on it in store*. However, when I received this, it felt like a completely different mattress - soft, pudgy, sinks down in the middle (what Central zoning PowerPack/lumbar support technology? Is this a scam?) and downright uncomfortable. I got this to help with a back injury I suffered a while back, so that means solid support that keeps that back held up firm, but this was the opposite, and the softness of it actually caused me more pain and discomfort in the long run. EdgeGuard - newsflash: it has no EdgeGuard support or technology in it. You roll off the edge just like on a standard mattress. Extra Firm rating: Nothing more than a lie. There is nothing about this that could classify it as extra firm. Other than its bad quality, the firmness rating would be medium to firm. Definitely not Extra Firm, and it was definitely not the same mattress I tried in store. The only positives were the delivery crew were amazing. Top lads. I really regret not going with my initial option from mattressonline, which had the same specs and was cheaper too. I would not even pay £200 for this rubbish.

1 Paul M

In the store this was the most comfortable mattress. We tried nearly every mattress in the shop. The selling point was the construction of the mattress and the salespersons insistence this was one of the most popular and highly rated mattress in the U.K. We bought the mattress and the delivery was arranged. First class service. Once the mattress has been delivered and the packaging removed, the smell was overpowering in the room. This was described to us as the mattress "off gassing" and the smell would dissipate within 48 hours. Luckily we have extra bedroom so it was left to vent its gasses. Two weeks later I decided to make up the bed even though the "off gassing" was still there.We have slept in it once, my wife who suffers from asthma now sleeps in the spare room. She awoke in the night in a coughing fit. I am trying to use the bed myself but I wake up with this smell wafting from the bed. This smell was not evident in the showroom. The current advice is to place it in the garage to air properly. I am so angry about this mattress. It's a shame because we have used bensonforbeds regularly and never had any issue before. This mattress will be withdrawn from sale if they want loyal custom.

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