Excellent, both delivery & product. Firm mattress with no side give, which as an “edge sleeper” is a rarity. It is quite heavy but manageable, took only 4-6 hours to fully expand & no “new”... See more
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Replaced our old ergoflex, also bought one for our spare bed too. I can’t recommend them enough, so comfortable, worth every penny, have recommended to everyone who will listen. Excellent service, tha... See more
We bought this mattress 5 weeks ago after 10 years on the old one. Myself and my husband are pensioners and both agree that we are having the best night's sleep ever. Although we were expecting to... See more
We had an old Ergoflex mattress that we inherited and used for 7 years and found it very comfortable. We changed to a conventional mattress when we moved and found it to be uncomfortable and when on... See more
Company details
About Ergoflex
Written by the company
Ergoflex - The UK's Original Mattress-in-a-Box - Highest Rated TrustScore
Ergoflex introduced the mattress-in-a-box category in the UK back in 2006 - a full decade before the competition caught on. The Ergoflex 5G is the product of everything we've learned since; premium materials, enduring comfort and an industry-leading 4.8 Trustscore from thousands of independent reviews.
Our signature true high-density disco elastic memory foam contours precisely to your body to relieve joint pressure and ease back pain. The Cool-Sleep airflow system keeps air circulating throughout, ensuring a comfortable temperature. Beneath it all, a high-resilience base layer gives the Ergoflex 5G its legendary durability - no sagging, no compromise in comfort, year after year. With a naturally breathable TENCEL cover that's removable and washable, we've created the perfect sleeping solution - and our customers agree.
As well as class-leading products, Ergoflex® also offers first rate customer service and aftercare. No chat-bots, no automated responses and no extensive wait times on email. Our phone line and email system is staffed by our friendly professional expert team, who are ready to answer any questions or queries you might have.
Check out our reviews then compare to other mattress-in-a-box brands - the difference is clear.
Loved by Customers. Loved by Experts.
Written by the company
- Ergoflex® is a 2025 Which? Best Buy Mattress
- Our mattress has earned another prestigious Best Buy accreditation from leading consumer group Which?, with particular praise for durability, breathability and long-term performance. As the UK's original mattress-in-a-box company, established in 2006, we know that our customers agree.
- Ergoflex® is Recommended by Expert Reviews
- It’s not just our customers who love the Ergoflex® mattress, the team at Expert Reviews do too. Their specialists put our mattress through its paces over an intensive test and found it to be a supportive, back-friendly choice, awarding a much sought-after “Recommended” accreditation.
A Tried-and-Trusted 10 Year Warranty
Promises Kept Since 2006
As the longest-established mattress-in-a-box brand, in business since 2006, we know our mattresses last the distance in the real world. That's why you can trust our ten year warranty - it's not a marketing gimmick, a copycat claim or guesswork - it's the real deal.
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Save up to 61% against competitors
4.7
Excellent
2k reviews
Asks customers to review
This company invites their customers to review, whether positive or negative
Replied to 87% of negative reviews
Typically replies within 24 hours
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We're very happy with our Ergoflex…
We're very happy with our Ergoflex purchase; it's the firmest mattress we've ever experienced. I still get hot at night, but that's probably my age, and due to the very hot weather we've been experiencing this summer in the UK. All in all, a great mattress for the price.
1 August 2026
Unprompted review
Delivery prompt
Delivery prompt. The mattress was better than expected. The quality and finish are exceptional.
26 June 2026
Comfortable but the smells are toxic
A very comfortable mattress no doubt about it, however the off gassing is taking too long and the VOCs are terrible smelling. We left it 4 days before using and it was still a problem. We have our 3 month old in the next to me and we woke up to a new very strong smell coming from a part of the mattress right next to his crib. I’m very upset and it can’t be good for his little lungs. Hugely disappointed. I don’t ever remember our simba mattress taking this long to prepare. I’m questioning whether this mattress will ever be safe for us and our baby and have no idea about the genuine long term health effects we have just subjected ourselves too.
2 July 2026
Unprompted review
Delivery, too heavy for single person
Product fine, delivery timing fine. However it should be noted that king-size mattresses are too heavy for a single person to deliver. Delivery driver, only one, had no lifting equipment or lifting aids. Struggled to get from van to entrance hallway. Should not rely on recipient to help, as they may not be trained to lift safely and may be elderly or have health issues. The safe lifting regulations were certainly not complied with. This is something the delivery agent should address as it puts the delivery driver at risk of serious injury.
23 June 2026
Very firm
I have single Ergoflex mattresses and they are very good. So on 21/05/2026 decided to order a double. What a difference. Where as the singles have the right amount of give and support. The double is a different beast, Its very firm and there is no give in the mattress whatsoever. If you like sleeping on concrete its for you. I have been a loyal Ergoflex customer over the years, purchasing I think 4 single mattresses but this has put me off. Have contacted customer services at Ergoflex and they have kindly extended the trial period for 3 weeks making a number of suggestions. Cannot fault the customer service but the judgement is out on the mattress at this time. Well, tried the extra period of time and the mattress is still too firm So contacted customer services and a return has been arranged.
25 June 2026
Easy ordering and fast delivery
Easy ordering and fast delivery, although on a personal level found was not as FIRM AS ANTICIPATED!
17 June 2026
Comfortable mattress, hopeless delivery.The mattress itself is comfortable so…
The mattress itself is comfortable so far, and everything we wanted. The delivery, by DPD I believe, was a disaster. On the wrong day, to the wrong address - the box was dumped a day early in a neighbouring garden behind a high wall while the owners were away, and we were not notified of delivery. When (fortunately) they returned and alerted us, as pensioners we found the very heavy and awkward box almost impossible to carry and drag up the road to our own house.
15 May 2026
Reply from Ergoflex
Thanks for your feedback. We’re so sorry about your delivery experience, it is absolutely not what we expect for our customers and we will be investigating this as a priority matter. Please let us know if we can be of any assistance in future. Thanks again for choosing Ergoflex.
The mattress was delivered on time as…
The mattress was delivered on time as stated. Very comfortable and am enjoying my sleep at present with no complaints.
10 June 2026
great product
16 June 2026
Best ever Matress
I had ergoflex mattress years ago then changed to another brand due to menopause heat which never made any difference really. It was a pillow top mattress and after a while it had dips in in where our body laid si became uncomfortable.
We took the decision to buy ergoflex again and so glad I did
It took a few nights to get used to it again but I can honestly say that I am having the best sleep ever again
I will never change brand again. Well done ergoflex keep doing what you are doing.
3 June 2026
Comfortable sleeping.
3 June 2026
Love our new mattress
Love our new mattress!
The old one was hurting my back but as it was an European King, not many companies sells this size and the company that I purchased from had closed down so I was struggling to find a replacement.
Now my back doesn’t hurt and can sleep so much better.
For better service, it would be so much better if we can get them to deliver to our 1F bedroom rather than leaving it by our front door. I don’t have muscles so had to get our very-fit neighbour to carry it up with my husband.
12 June 2026
Lovely mattress,still get a few aches…
Lovely mattress,still get a few aches when shared with my husband, but overall pretty good.
10 June 2026
It’s my second matrace and it’s…
It’s my second matrace and it’s brilliant, 5*. However the pillows don’t fit well for side sleepers, it feels quite low 3*.
1 June 2026
Almost 5 star but the lead time from…
Almost 5 star but the lead time from order t delivery is long!
2 June 2026
Great mattress!
The Ergoflex mattress is a really great buy, and less than half the price of similar products from some other competitors.
Ordering was easy and delivery was quick and free, with a choice of delivery dates, including next day.
Mattress arrived very well packaged with good instructions about fitting, aftercare, and maintenance of the product.
The mattress and cover are really good quality, and, most importantly of all, very, very comfortable!
27 May 2026
Unprompted review
No problems throughout the buying…
No problems throughout the buying process.
Delivery on time . Goods well packed.
Was replacing mattresses which we purchased more than ten years ago
4 June 2026
New Mattress We bought our first Ergoflex mattress…
We bought our first Ergoflex mattress around 12 years ago so we knew what to expect just a brilliant mattress and a great price.
4 May 2026
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