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Best Soft Mattress 2021

Last Updated: September 6, 2021

If you are looking for the best soft mattress in the UK we might be able to help you. It is important to do your research when looking for a soft mattress as some of these mattresses come with unique challenges. It is not easy to find a mattress that feels like a cloud but at the same time excels in support and longevity.

As it is important to select a good quality soft mattress for the reasons just outlined, we picked some of the best soft feeling mattresses available in the UK today. We have listed hybrid mattress models as well as soft memory foam mattresses in order to offer something for most sleeping preferences.

(Important Facts, Studies, Advice, Considerations & FAQs In Conclusion)

MATTRESSTYPETRIAL & WARRANTYPRICE
Brook + Wilde Lux mattressHybrid100 Nights
10 Years
£599
REM-Fit 600 Lux mattressHybrid100 Nights
15 Years
£999
Silentnight Eco Comfort BreatheNatural Fibre60 Nights*
5 Years
£489
Dormeo Octasmart Deluxe mattressMemory Foam60 Nights
18 Years
£699.99
Tempur Cloud mattressTempur Foam100 Nights
10 Years
£1,839
Mammoth Shine Advanced Softer mattressMedical-grade FoamNA Nights
10 Years
£2,115
Prices are referring to the single size. Information may be subject to change, please check with the brand/manufacturer before purchasing.

1. Brook And Wilde Lux Soft Mattress

brook wilde soft mattress
(Image credit: Brook + Wilde)
HIGHLIGHTSSUITABILITY
• 100-night trial and 10-year warranty
• Soft, yet supportive due to five support zones
• Reduced motion transfer
• Couples
• Sleepers looking for pressure-relief
• People enjoying hybrid mattresses

The Brook and Wilde Lux mattress consists of 5 internal layers and an outer breathable and soft cover. Below the cover is a cooling memory foam for a soft and cool initial contact and two sets of spring layers, one of 2000 and another of 1000 springs, to provide support. In between the two spring layers sits a wave technology foam, with zoning for improved spinal alignment. The final layer is a sturdy base foam layer, solidifying the mattress. 

The layers come together to create a supportive yet also soft feeling mattress. The UK based company Brook and Wilde also offer a trial period where you can test the mattress at your home for up to 100-nights. If you aren't pleased, Brook and Wilde can either replace your mattress for a different firmness (soft, medium or firm) or give you a refund. 

To protect your purchase against time, you also receive a 10-year guarantee with your Lux Mattress. Finally, it is also worth mentioning that Brook and Wilde offers a premium delivery of the mattress to the room of your choice and they also encourage their customers to get in contact with them to discuss recycling options for their old mattresses. 

2. REM-Fit 600 Lux Mattress

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soft uk remfit 600 lux
(Image credit: REM-Fit)
HIGHLIGHTSSUITABILITY
• Open-Cell memory foam without cooling chemicals
• Edge-to-edge support
• 100-night trial and 15-year guarantee
• People prone to overheating
• Heavy-weight sleepers
• Couples

This 5 layer mattress features a zoned open-cell memory foam layer, two separate spring layers (2,500 mini and 1,000 full-sized), edge to edge support and finally a high-density base. Together they create a soft to medium tension feel mattress. It is also designed to be responsive and supportive around the circumference of the mattress which is something that soft mattresses are often criticised on. 

The open-cell memory foam enhances the breathability of the mattress and helps to keep it cooler without the need of adding cooling chemicals to the foam. The Re-Ax cover allows for easier airflow and is not only added to keep the mattress cool but also adds softness to the overall feel. 

With the REM-Fit 600 Lux mattress comes a 100-night trial, allowing you to test the mattress and ensure it is right for you. All returned mattresses are donated to the British Heart Foundation, REM-Fit’s partner charity. The brand also offers a 15-year guarantee, free next-day delivery and disposal service for your old mattress.

3. Silentnight Eco Comfort Breathe

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Silentnight Eco Comfort Breathe soft mattress
(Image credit: Silentnight)
HIGHLIGHTSSUITABILITY
• Free from harmful chemicals
• Contains 150 recycled plastic bottles
• Breathable and moisture-wicking
• People prone to allergies
• Side-sleepers
• People looking to buy a sustainable mattress

The Eco Comfort Breathe range from Silentnight includes some of the most sustainable mattresses on the market right now. This medium-soft mattress comes with Silentnight's Microclimate sleep system, combining three types of technologies that are all designed to enhance breathability and to wick away moisture from your body. This is meant to help with temperature regulation in order for you to sleep better.

It features a 2000-spring Mirapocket system where each spring is individually wrapped and responds independently to your movements. This can help to distribute your body weight better and to provide better support wherever your body needs it. This mattress is made with clean and breathable materials, which are backed by several awards and accreditations, and is especially suitable for side-sleepers who are looking for that soft feel while still getting enough support.

The most interesting feature of this mattress is the 150 recycled plastic bottles that go into each of these mattresses. Silentnight is environmentally committed and has helped save over 105 million plastic bottles from ending up in the ocean this year only. The mattress is entirely free from harmful chemicals and measures 31 cm deep.

(Video credit: Silentnight)

4. Octasmart Deluxe Memory Foam Mattress

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dormeo octasmart memory foam mattress
(Image credit: Dormeo)
HIGHLIGHTSSUITABILITY
• 8 x more breathable than pure memory foam
• 18-year warranty
• Anti-allergenic smart performance cover
• All positions, especially front and back sleep sleepers
• Couples, due to its individual support
• Hot sleepers

The Octasmart Deluxe Memory Foam mattress is, according to the brand, the smartest mattress that they have created so far. It features double memory foam and their patented multi-award-winning Octaspring® Aerospace technology that is also used in aircrafts.

The cover includes hundreds of comfort pockets built into it, producing a soft sleep surface. The softcover also includes anti-dust mite, anti-mould, anti-bacterial properties and is also anti-allergenic for a more hygienic sleep surface.

Dormeo uses open-cell memory foam in the first layer, which is twice as thick as in their other models, aiming to make the first layer softer and more comfortable. At the core of the mattress sits the Octaspring technology, these springs are designed to adapt 3 dimensionally to alleviate pressure from your hips, shoulders and back. 

The bottom layer consists of Dormeo’s Ecocell® foam which has a permanent cell structure, which means it holds its shape and provides structure and support for the mattress. The Octasmart Deluxe Memory Foam mattress comes with a 60-night trial as well as an 18-year warranty.

5. Tempur Cloud Mattress

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tempur cloud mattress uk
(Image credit: Tempur)
HIGHLIGHTSSUITABILITY
• Zip-off washable cover
• No need to flip or turn
• 100-night trial and 10-year warranty
• Sleepers in need of pressure-relief
• Sleepers who enjoy a very soft feel
• People looking for a low-maintenance mattress

Tempur is a well-known brand in the mattress industry and makes use of their own Tempur material in their mattresses made in Denmark. The cover is made of 3 parts, the top layer, side/ end panels and the base layer. The top is predominantly made from polyester, making it not only durable but also soft and stretchy. The cover is removable and washable at up to 60 degrees celsius.

The 3 layer cloud design features a top layer of Tempur extra soft material, which is meant to conform and cushion you to produce a "cloud-like" feeling as you lay down. The second layer works with the first layer to provide support and acts as a transition layer to the bottom Durabase foam. The bottom layer provides the foundation by using a strong and durable foam. Having a strong base means that the top 2 layers can work better, providing innovative support and softness. 

The Tempur Cloud Elite mattress comes at a higher price point but includes a 100-night trial and a 10-year warranty. Also worth noting is that it is a one-sided mattress that doesn’t need rotating or flipping. 

6. Mammoth Shine Advanced Softer Mattress

Up to 70% OFF
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mammoth shine advanced softer mattress
(Image credit: Mammoth)
HIGHLIGHTSSUITABILITY
• Made in the UK
• NBF Approved Product 
• Pressure relieving
• Sleepers in need of improved spinal-alignment
• Side-sleepers
• Sleepers prone to allergies

The Mammoth Shine Advanced Softer is made in the UK by a member of the National Bed Federation. The mattress features a Tencel fibre cover which can help battle bacterial growth while being soft and comforting. Mammoth uses medical-grade foam in this soft mattress version which is especially good for achieving comfort. 

The medical-grade foam is designed to respond immediately to the weight and shape of your body, helping you to remain in a neutral position. This can help to improve spinal alignment, allowing you to rest peacefully and comfortably. 

The Mammoth Softer mattress is also engineered to enhance pressure relief, allowing your body weight to spread across the mattress evenly. The mattress is also hypoallergenic as well as dust-mite resistant. This creates a more hygienic sleep environment, suited for those with allergies or asthma. 

This is a mattress that doesn’t need to be flipped over but the brand encourages you to rotate the mattress head to toe regularly. It comes with handles on the side for easier manoeuvring and includes a 10-year warranty.

Mattress Firmness vs Support

The first thing we should clarify before going more in-depth into the pros and cons of soft mattresses is the difference between mattress firmness and support. Mattress firmness and mattress support are commonly used interchangeably but they actually refer to different aspects of a mattress. For example, a mattress can have a soft feel and great support, knowing the difference is key especially for soft mattresses.

The firmness of a mattress relates to how the mattress feels, materials and layering determine if a mattress is soft or firm feeling. Mattress support generally is linked to how well it holds up, supports and keeps your spine properly aligned which is vital when looking for any mattress. A mattress with poor support can lead to back pain, which we will talk more about later.

Soft Mattress Temperature Consideration

The most common type of "soft mattress" is a memory foam mattress. Due to memory foams slow response nature it is commonly used for creating that cloud-like, hugging feel. Memory foam is heat retentive which you should keep in mind when doing your mattress shopping, it is a good idea to see if the manufacturer features some cooling technologies, such as gel in the mattress or even just a breathable cover.

If you are a hot sleeper and cannot find a cooling mattress that is soft enough you can also opt for a cooling mattress topper on a soft mattress.

Look for cooling properties in your soft mattress

Although we included some soft memory foam mattresses in this list we also made sure to pick some hybrid and pocket sprung mattresses for those needing extra breathability. Another tip if you are a hot sleeper thinking about buying a memory foam mattress, is to invest in a mattress topper with cooling properties as these can help regulate your temperature better throughout the night.

Edge Support

Edge support is an aspect you may need to consider especially if you are looking for a mattress for you and your partner. Soft mattresses tend to be challenged in this area because of their very nature and the materials used, but not always. Look for mattresses with added edge support and springs that add that extra support around the circumference of the mattress that way you can utilise the whole surface of the mattress.

Sleeping Next To A Partner

Sleeping next to someone can always be a minor obstacle when it comes to picking a mattress as you might have different preferences in firmness. Soft mattresses could be a great option for a partner mattress if you both like the hugging feel, as memory foam is highly motion-isolating. This means that even if your partner moves around at night, the movement should not travel to your side of the bed and wake you up.

Soft mattresses can be good for couples

Best Sleeping Position For Soft Mattresses

The ideal firmness of your mattress can depend on various factors, one of them being your preferred sleeping position. Softer options are often more suitable as mattresses for side sleepers as the sleeper’s body weight is concentrated on the widest part of their body (hips and shoulders), making them need added pressure relief in those areas. It is however important that the mattress provides enough support to prevent the hips and shoulders to sink too deep into the mattress and pull the sleeper’s spine out of correct alignment.

Research✓ has shown that elderly people often tend to sleep on their right side and that the older we get, the less we change position throughout the night

Front and back sleepers tend to avoid soft mattresses as the middle section of their bodies can feel like they are lacking support, which can lead to them waking up with aching backs. A zoned mattress could however be a suitable mattress for front sleepers and back sleepers

Soft Mattresses are good for side sleepers

Medical Needs For A Soft Mattress

A soft mattress can be a life-saver for people with certain physical needs. Soft mattresses are great for pressure relief, which is something that many sleepers look for in a mattress. As many as 80% of the adults in the UK suffer (or have at some point) from back pain according to The Regenerative Clinic. Others suffer from pain in the hips, cervicals and joints in general, and sleeping on a firm mattress can sometimes lead to increased pain.

People that spend more time in bed than the average person, such as older people, sick people or people with certain disabilities could also benefit from a softer mattress in order to prevent pressure sores.

Is Your Bed Causing You Back Pain?

In some cases, back pain can actually be caused by your mattress. As we spend around a third part of our lives in bed, it is very important to evaluate whether or not your mattress is what is causing you pain, or at least not alleviating it. There are tons of great orthopaedic mattresses and mattresses against back pain available on the market, but it can be difficult to know which one is the right one for us.

It is often said that firm mattresses are better against back pain, but a study✓ shows that patients with a medium-firm mattress showed better results for pain than those sleeping on a firm mattress. No matter what firmness your back needs, these are some indicators pointing at your bed being part of the problem:

  1. You wake up in pain. If you feel alright when going to bed but wake up feeling like a train ran you over while sleeping you might want to reconsider your choice of mattress.
  2. Your mattress is losing shape. Over time, mattresses can loose some of their shape and you might feel like there is a hole in the middle of your mattress. This can easily result in incorrect spinal alignment which can lead to back pain.
  3. Your mattress is old. Your mattress may look, and feel, fine while laying down on it but older mattresses start losing their ability to support you properly. Make sure to check how old your mattress actually is and how long the brand guarantees it to stay in top shape. It might be time to dispose of your old mattress.
Is your soft mattress giving you back pain?

Soft Mattress Weight Considerations

The sleeper’s weight is another factor to take into consideration when deciding on the firmness of the bed. Soft mattresses are generally more suitable for light to average-weight sleepers. A good mattress for heavy people should be firm enough to support their weight and distributing it evenly across the mattress.

Sleepers on the heavier side tend to sink too deep into soft mattresses and thus not find it supportive enough. Heavier sleepers can however sometimes find medium firmness mattresses quite soft so it might be worth looking into a medium-firm mattress rather than a soft mattress if you are above average weight. 

Personal Preference

There is only so much we can say about recommendations and suggestions, in the end, finding the best mattress for you comes down to personal preferences. These suggestions are based on research, reviews and general opinions but you should always consider your own preferences and go with what feels right for you. If you suffer from any medical condition you should always consult with a specialist before purchasing any mattress.

Consult with a specialist before buying a soft mattress

Choosing The Right Soft Mattress

If you have come this far and still think that a soft mattress is the correct choice for you, how can you be sure you are choosing the right one? Make sure to do your research and, if possible, try out a few options in a store. Keep in mind the following things:

  • Check what type of support layer the mattress has. You want to make sure it is still supportive, even if you feel like laying down on a fluffy surface.
  • Consider whether or not you tend to overheat at night. If you do, consider getting a hybrid or a pocket sprung mattress for higher breathability. Organic and natural mattresses are usually great options for hot sleepers.
  • Are you going to share your mattress with your partner? Ask them what their preferences are and remember that memory-foam is great against motion-transfer. If you have very different tastes in mattresses, consider buying from a brand that offers dual-firmness mattresses or the option of zipping two different mattresses together.
  • If you still aren't 100% sure you're picking the right mattress, go for a brand that offers mattresses with a trial period. This way you can evaluate for many nights in your own home if you have made the right choice.

Frequently Asked Questions 

What is the best soft mattress to buy?

All sleepers have their own preferences in materials and brands, so choosing the best soft mattress is something very individual. Generally speaking, the best soft mattress is one that gives you enough support based on your weight and general needs and still makes you feel like sleeping on a cloud.

How to make a soft mattress firmer?

If your mattress has a trial period that hasn't expired you should change it for a firmer one. If you cannot change it you can purchase a firm mattress topper or try changing the springs or move the layers around if possible. The lower layers tend to be the sturdiest.

Why does a soft mattress hurt my back?

Soft mattresses sometimes don't have the necessary support to keep your spine aligned which can put extra pressure on certain areas and cause back pain. You should always consult with a specialist if you believe your mattress is causing you pain.

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