rem fit 400 mattress review

REM-Fit 400 Mattress Review UK

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REM-Fit is one of the most exciting brands that entered the UK market in the last few years. They have developed a range of mattresses that are designed to cover everyone’s needs. In this REM-Fit 400 mattress review, I will talk about this affordable hybrid option and whether it’s one you should consider.

After reviewing the REM-Fit 500 mattress, I was really curious to see what they did with their 400 series. The two mattresses have a different feel but they follow the same design philosophy. All REM-Fit mattresses come packed in a box and they will be delivered directly to your door. Mine arrived about a month ago so I would like now to move to the full review below.

Materials & Construction

The REM-Fit 400 mattress has a straightforward design and it’s made of 4 layers. These are:

  • A memory foam layer which is infused with cool gel. This helps it keep the sleeping surface cool during the night.
  • A Mediflex memory foam layer which will provide your body with the needed pressure relief. It focuses on the most demanding areas of your body like your hips and shoulders.
  • A layer which consists of 2,000 tall (15cm) pocket springs. They are there to provide your body with the needed support.
  • A dense foam layer which keeps the mattress altogether and helps with support.

To improve the edge support, they have also added foam-encapsulated sidewalls which is a clever design addition. If you want to know the position of each layer, you can look at the image below.

rem fit 400 mattress materials


The cover of the REM-Fit 400 mattress is designed to have thermo-regulating abilities. For this reason, they used Re-Ax fibres which are developed by them. The cover will keep you warm during the cold nights but will keep you cool when the temperature rises. It’s very breathable which allows the mattress to create a comfortable sleeping environment. The cover feels soft and it has a contemporary design. The top part features a white colour and the bottom part is dark grey. A purple line separates the two parts. The cover is removable so you can machine-wash it at 40 degrees. This is great as you can keep this clean easily. Unfortunately, there are no handles to help you move it and I think this is the only weakness of this cover. Other than that, I think they did a great job here.

Comfort & Support

This mattress is designed to suit the average sleeper. In my opinion, it’s the typical ‘mattress in a box’ so it comes with a medium-firm feel. If I use my virtual scale here, I would say it’s a 6.8 with 10 being really firm. I would like now to talk about the different sleeping positions and how this mattress did.

firmness scale

Let’s talk about the back position first. The foam layers did a good job of hugging my hips and shoulders. They promise a ‘floating feeling’ and I must admit I felt this way. Support was great and I felt it was comfortable in this position.

Turning to the side position, the mattress reacted quickly and sinkage increased. This helped my spine to align correctly. Support was adequate and the mattress did a good job in this position.

Finally, turning to the stomach position, the mattress did a decent job but if you are an avid stomach sleeper, you should probably look for a mattress with a firmer feel. Having said that, I think that the REM-Fit 400 will suit combo sleepers as it performs well in all sleeping positions.

If you are a couple, this mattress can be a good choice for you. The great edge support means that you will get the same performance across every corner of the sleeping surface. Moreover, the taller pocket springs used here are designed to eliminate motion transfer so you won’t face the annoying partner disturbance. Therefore this is a couple-friendly mattress.


The REM-Fit 400 mattress comes with Free Next Working day delivery which is great. As I have already mentioned, this mattress will come packed in a carton box and it will be delivered to your doorstep. However, they offer a number of delivery options so you will definitely find the one that suits your needs.

Next working day deliveryFREE
Day of choice deliveryFREE
Premium 2-person delivery£20
Premium 2-person delivery + mattress removal£50
Guaranteed Saturday delivery£30

I decided to go with the Guaranteed Saturday delivery as I was busy with work. It cost me an extra £30 but I think it was worth it. The whole process was very straightforward and I received adequate communication from them. The courier was polite and on time. Overall, I was really happy with their delivery service.

rem fit 400 mattress

Trial Period & Guarantee

When you buy a REM-Fit mattress, you will get a 15-year guarantee which is amazing. I need to remind you here that most of the other makers offer a 10-year guarantee so REM-Fit does a great job here. Besides that, you will also get a 100-night trial period which gives you plenty of time to decide whether you want to keep it or not. If for any reason you are not happy with your purchase, you can return it and get your money back. It’s not a difficult process and all you have to do is talk to their customer service department. All returned mattresses are not wasted, instead, they are donated to the British Heart Foundation. This shows that REM-Fit is a company that cares about the community and I think more makers should do the same. Overall, they offer a fantastic package here and it’s one of the reasons you should consider getting this mattress.


I would like now to complete this REM-Fit 400 mattress review and share my final thoughts with you. I think that REM-Fit did a great job with this one and they managed to create an affordable mattress that is good for all sleeping positions. This is not an easy task but they managed to nail it. It’s very well-built and it comes with excellent service and support. If you want a high-quality hybrid mattress and you don’t want to break the bank, you should have the REM-Fit 400 mattress high on your list.

REM-Fit 400 Mattress Review UK
Good for all sleeping positions
Great value for your money
15-year guarantee
No handles to carry it