Sleeping Duck Mattress Half-Half King
Verified🏆 2026www.sleepingduck.comMPNs: SDMAT-KNG-HH and US-MAT-MACHII-KNG-HH313 reviews
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Reviews with attachments
So just purchased a sleeping duck about a week ago - so fair so good. My husband sleeps on a medium form section and I sleep on the firm. I am a side / stomach sleeper with pre history of lower back issues and it has been great. We had a recent situation where we purchased a mattress from a local shop in April 25 and the previous mattress we had… Read more · 1
started to develop a dent or valley so to speak after 3-4 months…. The manufacturer is trying to blame on ‘weight distribution’ and it’s not their manufacturer issue… I had neck, shoulder and hip pains from the previous mattress, and since swapping to a sleeping duck, it has done absolutely wonders. I am suffering from shoulder pain atm but that’s not from the sleeping duck, it’s from the previous mattress which unfortunately has been due months of uncomfortable sleeping - tbh I will probably need to seek treatment for it (fyi I’m in my early 30s and active for the most part). In just a week the sleeping duck has been a game changer and honestly it has been incredible - my hip and neck pain is gone!
If you’re on the fence, just do it and don’t wait ! The longer you wait, more time passes which leads you too sleepless and uncomfortable nights. Oh and the other mattress that we purchased from the local shop costed more than the sleeping duck - so it’s honestly a bargain. FYI though the SD in the box is pretty heavy and was a work out taking it up stairs to our room, but it has been totally worth it. Sorry for the rumble but I know for myself who was on the fence for months and literally going through a battle with the other mattress company, and dealing with so much pain and suffering, the Sleeping Duck has completely changed my sleeping experience - thank you SD for creating a product that actually works and not a gimmick!
Amazing product & customer service – After doing some some digging and research the segmented mattress option that Sleeping Duck offered seemed like the right fit for us. After receiving our mattress and finding the right balance of firm and softness setup, my partner and I have had some of the best sleep we've ever had. Definitely recommend this product for anyone looking for a great mattress and base. On top of that, the customer service has been fantastic! Show details · 1
No regrets, this mattress is amazing – After a fair bit of research we bought a king sleeping duck. The mattress was a bit soft so we ordered a medium inlay. The service from SD was spot on and could not be faulted. Last night my 7 year old had a nose bleed whilst in out bed. No problems because I took the cover off, washed it on a delicate cycle, a half a day on the line and it’s back… Read more · 1
on the bed like it had never been off. I could not recommend a SD more. You will not be disappointed.
After swop still not comfortable! Maybe I’ve high expectations for a $2k mattress where $200 IKEA one does the same – Average mattress for the price paid! I have No previous health condition There No difference to my old mattress Maybe will last long not sure as only had it for 6 months Show details
- +4
DO NOT BUY - Design and quality issues with top layer construction – We have been loyal Sleeping Duck customers for years, purchasing their original versions several times for our kids. We decided to purchase the King Size Sleeping Duck Mach 2 recently for ourselves. Whilst we still love the feel of the mattress itself, an issue seems to have developed with the new construction of the top layers. The outer… Read more
casing is flimsy, short and unable to adequately hold in place the foams - they move about, creating annoying hollows, especially at the bedhead. Completely absent is a firm and secure structure to the top layers, making the whole construction 'drift' forwards, once slept on. Pillows then collapse into the gap, making the whole set-up pretty intolerable. Sleeping Duck did not want to acknowlegde this and refused to return/refund, even though they offer a 10 year manufacturers warranty. We will now be pursuing via VCAT. Unfortunately it took us quite a while to recognise the root cause of the problem, so the mattress was out of the100 days Guarantee period.
Hi Rebecca, Thanks for keeping in touch - we do… Read more (+3 replies)
In-depth reviews
I bought the Sleeping Duck Mach II mattress back in 2022, as our old one was well past its prime. Just after the 100-night trial ended, I emailed them to say I’d started experiencing back pain since switching. To their credit, even though I was outside the trial period, they sent me the firmer inserts—which was great customer service. At first,… Read more
that helped. But over time, the mattress softened again, and the back pain came back with it. I even tried adding a firm topper to avoid having to replace the whole mattress, but it didn’t solve the problem.
More recently, I saw a specialist and found out my hips are now misaligned, which is what’s causing the lower back pain. I now need treatment to get things realigned.
I toss and turn all night and rarely sleep well. Honestly, I sleep better in hotels. It’s frustrating to be back at square one just three years later, needing to spend serious money again on a proper firm, supportive mattress.
I never had back issues before this mattress, and I wouldn’t recommend it if you’re after long-term firmness and support.
Sorry to hear you’re struggling to find comfort,… Read more
If in Doubt....Do it....You won't be sorry! – After quite some time sleeping on a failing, sagging mattress atop a relatively flimsy base, we started to search for a new mattress. To be honest the single store, business model used by the Duck.was a little confronting, but from my point of view was pretty much sold on both the "indestruct" base and the mach 11 from that moment. My partner… Read more · 3
had comfort issues with both the product and the mode of operation of the company, so we continued to search for alternatives. Inevitably, we would come back to 'the duck' as our perceived best option. But what about all the sales promises, 100 days of adjustments, etc etc. We continued to search. Again we came back.to the 'duck'. We finally took the plunge of faith and placed the order. Can I tell you.... It was the best descision ever!!! The transaction was easy, delivery on time and as expected. Removal of old mattress .... no probs. We ordered a half half. King and the Base as well. After one night...I was in Heaven!!! Firm suited me perfectly. My partner 'R' was not there yet. We tried swapping the sides, but no..... so.made the call to SDHQ and like lightning our 'soft' order was on it's way. R was also in heaven! But as she has other issues (reflux etc) we contacted SDHQ again to request a segmented pack of adjustment foam. This was also on it's way in no time, but not only that, some excellent advice as to what else we could do to alleviate the problem. Happy to say, I believe that with the help of the 'duck' team, we are both loving the bed and base!!
So...we would rate the product as 5 stars without a doubt. Customer service and living up to expectations....10 star if it were possible!! As stated....to anyone unsure and wondering.... DO IT !!!
Humbled by the After Sale service to a "needy" customer who wanted to assure my comfort – The After-Sale Customer service experienced was magnificent for SD Mach II Mattress. After already making changes to my totally firm side of the mattress to a segmented version, I then asked for further changes, not only to my side - changed to Med, Soft, Med, Med, Soft, Med and because I loved the flexibility of rotation of segments I asked them… Read more · 1
if I could change out my husbands totally medium side to a segmented version of Med, Soft, Med, Med, Med, Med. Although I was fine lining my 100 days of change up, they wanted to assure my comfort and sent me the changed segments. My lower back discomfort is now far better controlled and both my husband and I are loving our sleep and the flexibility of changing around the segments. This is something that we have never had before and are thoroughly enjoying the support provided and the pressure on my heels has now gone. Thoroughly recommend this mattress & the Sleeping Duck Team.
Positive reviews
A new mattress is a big decision. However, all the positive reviews and knowing the mattress can be customised with ease made the decision easy. The mattress was a huge step up in comfort from day one although, I had to settle in and my body took a few weeks to adjust. After a few weeks I started to notice positive changes to my sleep and body,… Read more · 1
changes I didn't know a new mattress could make.
My wife felt her side was too soft, so she wanted to make it firmer. I simply reached out to SD and they sent out a firmness adjustment and now she's also very happy.
Great work Sleeping Duck, Will definitely recommend this product
Since purchasing our sleeping duck mattress we have had the best nights sleep. I have medium my husband has firm. From our first contact with sleeping duck to ordering the mattress adjustments, sleeping duck customer service have been amazing. We love our sleeping duck and will never go back to any other mattress. Took us all of 2 nights to adjust to our new bed, we love it. Show details · 1
We bought a mattress and a base, the base is incredibly solid and heavy which has pretty much eliminated partner disturbance for us. After some fine tuning of the foam layer (great, fast after-sales support), it's the most comfortable bed we've ever had. Show details · 1
Negative reviews
We've had a sleeping duck king size mattress for about 3 years now, and all I can say is DON"T make the same mistake I did, don't buy one! My experience is similar to the other one star reviews and I'd assume the good reviews are from those who have purchased the mattress recently. It's great for the first year, maybe a bit less. I probably would… Read more
have given a good review back then. But after that, and conveniently after to trial period, the mattress deteriorates fast. It begins to sag and you can visually see the sagging when you take off the foam layers.
It has destroyed my back, and my partners back. I wake up in pain most nights and can barely walk. I have seen a physio, but we have to replace this mattress. We have all the different foams, firm, medium, soft, and the little ones you can put together. Nothing changes the issue. But I can see the sagging underneath, so it looks like some of the springs have collapsed.
So, please look at the bad reviews before making this decision. Look at how long the person has had the mattress. Those who have had it less than a year haven't experienced the real poor quality yet.
Sorry to hear you’re struggling to find comfort,… Read more
Find out how Sleeping Duck Mattress Half-Half King compares to other Mattresses
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Disappointing – Purchased the mattress and pillows in 2019. Called to buy a replacement of the pillow protector that the pillow comes with. It’s fundamental as the actual foam is really hot so the protector that it comes with really allows for the pillow to work great. They really don’t understand this concept - how the pillow protector is so important. You… Read more
can’t just buy any brand as it won’t fit snug. They just shrugged me off - not really caring about the situation.
Thanks for sharing your experience with us, Nicole!… Read more
DO NOT BUY! I read all the good reviews when I bought this mattress thinking it was going to be great. I should have read the 1 star reviews because they are all from people who have had the bed for over 3 years. Hence why I’m here. The bed after a couple of years will absolutely destroy your back. My partner and I both wake up in pain every night… Read more
multiple times. I haven’t had a good sleep in 2 years. Never have I had a mattress that fails so badly after a short amount of time. Spend the money on a proper mattress. I will never buy a sleeping duck mattress ever again and I’ll definitely make sure to tell other people about it. Also good luck getting any kind of real solution from them. Their “warranty” is useless.
Thanks for reaching out, blackandgrey D, and we’re… Read more
Recent reviews
Where has this been all my life?! I trialled the sleeping duck half half and it's been an absolute game changer. Had a few questions and the staff was amazing! Thank you for such a great experience Show reply
The Sleeping Duck team have been exceptionally helpful, sending out the softer mattress pads when requested, and then checking in and sending out another firmness to make it perfect! Nothing has been too much trouble. I love that the mattress has the removable cover and it is so easy to adjust the firmness. The mattress is very heavy and dense, so… Read more · 1
it is warmer than what we upgraded from, but I made sure to buy only natural fibres for our mattress protector and sheets and this has helped a lot. It is such a dream to get into bed at night. Would absolutely recommend Sleeping Duck to anyone, the adjustability is just so important, we didn’t know what we liked until we actually slept on it. Obsessed!
After a couple of months on our Sleeping Duck half-half king-sized mattress, the comfort has proven to be an absolute standout. Having previously tried competitors like Koala and Ecosa, this is in an entirely different league. It is exceptionally lovely to sleep on, striking the ideal balance between pressure relief and proper support. Just as… Read more · 1
importantly, the motion isolation is remarkable – either my partner or I can toss, turn, and move freely without disturbing the other in the slightest.
The customer service has been equally impressive. When we reached out regarding firmness adjustments, their response was prompt and helpful, making the whole process effortless. If you are seeking undisturbed rest backed by exceptional support, Sleeping Duck is well worth the investment.
The sleeping duck matress and bed are great, feel very supported without feeling too solid. The design of the matress top feels good too, its very breathable, never feel too hot, very comfortable. Show reply
The mattress is outstanding, it is very comfortable. I used to have the problem of waking at night feeling hot, I had tried different types of sheets and quilts but nothing helped, until now, the sleep I am getting on this new mattress is life changing, I no longer have temperature issues and the overall comfort is excellent. My partner and I both… Read more · 1
work different shift hours, the mattress is very good at isolating the other person's movement. When I was looking for a new mattress I had shopped around for a while at bedding and department stores. The things that made me try Sleeping Duck was the offer of the trial period and different firmness options, the option to have two firmness options on one bed was very good for my situation. Now that I have slept on the mattress for a few months I am very happy I chose this mattress. I also spent a lot less money than I could have on other brands that didn't have the options that SD has.
Spectacular service from start to finish. From ordering, delivery, and setting it up. Couldn't be easier. Constant check ins to see if everything is ok. Bed is absolutely beautiful. Show details · 1
I honestly have never slept in something that's as comfortable as this sleeping duck mattress. The half - alf was a necessity for myself and my SO and has not disappointed. Customer service has been quick and excellent with super helpful operators that made the ordering and amending process seamless. Show details · 1
Find out how Sleeping Duck Mattress Half-Half King compares to other Mattresses
Know better, choose better.
We were initially a little sceptical about ordering a mattress that comes in a box, however, we have family who had a Sleeping Duck mattress for several years now, and they still rave about it. From ordering, delivery, changing firmness to suit our individual sleeping needs, Sleeping Duck were amazing! And it’s fantastic value for money, as we… Read more · 1
have previously spent way more on other brands. We love our new mattress and would highly recommend it if you are shopping for something new. We’d definitely buy one again.
Over the last couple of years, we the purchased 3 different mattresses. The first we sent back the 2nd we gave away and the third was the most expensive and we had to fight to get our money back. And then the fourth was the sleeping duck. This bed is amazing the staff are so helpful and our sleep is just beautiful; we don't want to get up in the morning. This is the best purchase we have ever made. Show details · 2
Tried a previous well known mattress in a box and it was a failure. everything about Sleeping Duck was great. Delivery, packing, quality of mattress and HO support was excellent. We needed to tweak the mattress slightly with varying levels of foam but nothing was a problem. Show details · 1
Super disappointed in this mattress now, first 2 years were great but after just a few months I noticed the middle seemed raised, now 5 years in it's a mountain in the middle that I can barelyroll up onto. My partner and I are both under 70kg so it's not like we are heavy. We regularly rotate the mattess and rest the foams on their sides as… Read more
recommended by the manufacturer but all of this has made no difference. No point claiming on their ridiculous warranty as visually it looks perfect, it's only when you lie on it that you feel the sagging. Will stick with Sealy from now on who don't have ridiculous caveats in their warranty.
Thanks for reaching out Sam, we're sorry to hear… Read more
From ordering our sleeping duck mattress and the indestructible bed our process was excellent. I was kept up to date with my order and the customer service I received was excellent best company I have ever had to deal with. The bed and mattress is well built and comfortable would highly recommend it. Even getting comfort level adjustment from the… Read more · 1
company was superb and fast and the staff was wonderful to deal with 10 out of 10 for customer service
After the initial adjustments and adding the extra support to our base recommended, we have been seeing a dramatic improvement to our sleep and lower back pain. The flexibility of having the 50/50 means my husband can sleep on his preferred firm level while I have a comfortable medium and this suits us both well while not seeing or noticing any… Read more · 1
issues at the transition point in the middle. We have rotated once (at the monthly mark) with ease and used the second top cover due to a sick kid one night, but it meant we could all get back in bed and get the rest we needed.
After sales support issues – Mattress is initially quite comfy but some issues with after sales support not being able to swap the firmness of pillows. Ive wasted a bit of time and money throwing out old pillows which i now require due to the fact that sleeping duck were unable to exchange my pillows for my desired height. Show details
Thanks for sharing your experience, Joec! We’re… Read more
Best bed we have ever had – We both have back injuries, arthritis and other medical conditions. We both are enjoying better quality of sleep. Having the different support needs catered for has been a game changer for our comfort and sleep. There has been no movement or sounds of any sort. We are not disturbing each other when either have a restless time. Our only concern is… Read more · 1
the the medium side is moving and bunching at the head end under the lining and need regular readjustment.
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Hi Terry L., We appreciate you taking the time to… Read more