Silentnight Just Relax 3 Zone Foam Mattress

Silentnight Just Relax 3 Zone Foam Mattress

sleeping cat
11p per sleep based on average mattress lifespan
Small Double
King Size
Super King
With Divan Bed Set
With Ottoman Bed Set
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Pros & Cons

Here we collect tests, guides and product reviews so that you can create a picture of what others think about the product. This analysis and review is based on my experience and a decade of industry insight.

Mid range mattress at entry level pricing and rolled for convenience. This is Silentnight's answer to the bed-in-the-box surge seen in recent years.

All foam solution keeps costs low and is easy to maintain.

Memory foam is one of the most popular comfort layers and for good reason, exceptionally comfy and fairly durable.

Get's quite warm, unfortunately a byproduct of an all-foam product like this.

Intimacy might not be perfect on a foam mattress but the edge support is surprisingly sufficient.

Quite new at time of writing so no long term trials.

Read why our sleep experts loved it ›

Who is it best for? powered by SnoozeScore

In our experience, the materials and construction that go into this product can make it suitable for the following people.

Combination sleeping, all positions sleeper icon
For combination sleepers
Suitable for back, stomach and side sleeping.
inhaler icon
Good for allergies & asthma
This mattress has anti-allergen properties
Sleep apnea icon
Helps those with sleep apnea
Soft and medium tensions promote side sleeping.
Snoring icon
Helps prevent snoring
Promotes side sleeping which stops snoring.
snooze score logo Still not sure if the Silentnight Just Relax 3 Zone Foam Mattress is suitable for you? Answer 4 simple questions with our quiz Take Suitability Quiz

Why our sleep experts loved it

Another day and its another review with the Just Relax 3 Zone Foam Mattress topping the list today. This innovative product is a new addition to the Silentnight family and a key member of the Just Sleep range. Boasting a plush memory foam comfort layer and Silentnight's own Miratex® foam support system, it's a thoughtfully crafted sleep solution designed to provide unprecedented comfort and support.

The Just Relax 3 Foam Mattress boasts a medium tension that appeals to a broad spectrum of sleepers who don't have specific orthopaedic needs. This balanced firmness offers adequate support to the body, maintaining a comfortable sleeping posture.

Who I recommend the Silentnight Just Relax 3 Zone Foam Mattress for

This Mattress is the ideal choice for both side and back sleepers, thanks to its medium tension, often referred to as the 'Goldilocks' tension due to its mass appeal. The memory foam in the comfort layer caters to sleepers looking for a responsive sleep surface that adapts to their unique body shape, delivering contoured comfort and pressure relief. Memory foam also has the advantage of evenly distributing body weight, reducing the strain on pressure points and offering a personalised, body-hugging feel.

Who I do not recommend the Silentnight Just Relax 3 Zone Foam Mattress for

While this mattress is packed with attractive features, it may not be the perfect fit for everyone. Sleepers who tend to heat up easily may not find it suitable due to the memory foam's inherent lack of breathability. Furthermore, those who prefer a mattress surface that allows for free and easy movement might not find this the ideal pick as it's easy to feel 'bogged down' by the enveloping nature of the memory foam.

Benefits of the comfort layer

This mattress features a comfort layer made of memory foam, a popular choice for its plush feel and body-conforming characteristics. While it may not be particularly breathable, it provides significant comfort, value, and is a sought-after material due to its responsive nature.

Benefits of the support layer

The mattress employs the Miratex® foam support system, a firmer hard foam variant that does not compress easily. This makes it a robust base layer, offering ample resistance to the body and allowing for exceptional body contouring and support. Although this type of material is common in the industry, it's a first for Silentnight and past performances suggest it should perform admirably.

Will the mattress suit couples?


When it comes to intimacy, the Just Relax 3 Zone Foam Mattress may not be the best choice. The enveloping nature of memory foam can make movement more challenging, while the material's tendency to retain heat may lead to a warmer and potentially less comfortable experience.

Motion Transfer

Where the mattress truly shines is its ability to minimise motion transfer. Thanks to its memory foam and base foam construction, any movement is effectively absorbed without creating unnecessary bounce. This makes it an excellent choice for couples, as it ensures that one partner's movements won't disturb the other.


Unfortunately, the mattress does not excel in terms of breathability. It lacks materials known for their cooling properties, which could be a downside for those who tend to sleep hot.

Edge Support

The Silentnight Foam Mattress offers decent edge support, likely due to the firmer foam used in the support layer. While it might not be top-tier, it is sufficient to allow full utilisation of the mattress width without worrying about the edges sagging.

Customer Feedback

With its recent entry to the market, customer feedback is somewhat limited. However, the available testimonials suggest that users are generally satisfied with the mattress. It has been commended for its superior comfort, with one user noting that it provided a notably enjoyable sleeping experience.


Offering remarkable value, the Silentnight Just Relax Foam Mattress is priced between £200-300 for its smallest size, with all popular UK sizes available.

Additional Features

This product brings additional benefits that are worth considering. Delivered rolled up, it offers eco-friendly convenience by reducing carbon emissions during transport. It's easy to move to your room of choice and being hypoallergenic and approved by Allergy UK, it provides a fresh and clean sleep environment by combating allergens. The mattress comes with a generous 10-year guarantee, promising a long-lasting and reliable sleeping solution.

Final Thoughts

This Silentnight Just Relax 3 Zone Foam Mattress is a worthwhile investment for those seeking a memory foam mattress that provides personalised comfort and support. Although it may not be ideal for everyone, particularly for those who sleep hot or prefer easy movement on their mattress, its other qualities make it an excellent contender in the mid-range market.

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How does it feel?

Personalised feel depends on bodyweight. Adjust your weight below to get an indication of how the Silentnight Just Relax 3 Zone Foam Mattress may feel.

weight description image
Quantitative Measurements KPI question mark
Of The Silentnight Just Relax 3 Zone Foam Mattress
Here's how the product performs based on the materials and composition when compared to other products of similar price point. These measurements are produced using a combination of specification-heavy algorithmic data points and our own hands on experience.

Quantitative Measurements KPI question mark

Here's how the product performs based on the materials and composition when compared to other products of similar price point. These measurements are produced using a combination of specification-heavy algorithmic data points and our own hands on experience.


*Assuming average weight, suitability will vary dependant on body type, use the quiz above for a more tailored guide.
  • Back Sleepers
  • The amount of support offered from a mattress will vary depending on the firmness of the tension and the type of support layer used. Based on a person of average build.
  • Side Sleepers
  • If you sleep on your side you typically need a supportive tension that is not too firm, nor too soft. This is because your hips and shoulders need adequate sinkage.
  • Stomach Sleepers
  • Stomach sleepers need a reasonable amount of tension in the base support layer to adequately offer body contouring and help prevent aches and pains. Results will vary based on your build.


  • Breathability
  • Mattresses that feature breathable materials help promote airflow and keep you cool making for a more hygienic night's sleep.
  • Turning on mattress
  • Certain materials like memory foam can make it difficult to move about on the mattress while you toss and turn. Same too for pillow tops which can create a cloud like sensation which can make manoeuvrability challenging.
  • Stability
  • Depending on the type of support layer in place can have an impact on stability, edge to edge support and roll together prevention. Pocket springs of a firmer tension will have better stability than open coil soft tension, for example.


  • Initial Odour
  • Materials in mattresses, particularly memory foam and rolled bed-in-a-box mattresses can have an initial odour, this is typically short term and reduces considerably within 24 hours.
  • Long Standing Odour
  • Certain materials inside different mattresses can produce a small odour. Typically this is short term rather than long standing but there are minor exceptions.

Brand Rating

  • Overall Brand Rating
  • This is based on community driven customer reviews tied to product reviews and grouped together at a brand level to produce a score.
Of The Silentnight Just Relax 3 Zone Foam Mattress
Brand: Silentnight
Retailer: Mattress Online
Delivery Time: Excellent
Delivery Charge: Excellent
Guarantee: Excellent

Calendar Icon Radar Analysis Radar Analysis Question Mark

Radar Analysis looks at the product, brand and retailer against base norms established within the industry and determines where the product sits by way of established performance metrics.

Product Relevant Videos

Hand picked video that relates to the specifications of The Silentnight Just Relax 3 Zone Foam Mattress

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Silentnight Just Relax 3 Zone Foam Mattress
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How we reviewed this product

At WantMattress, we adhere to stringent sourcing standards, drawing from peer-reviewed research, scholarly institutions, medical associations, and firsthand accounts and experience. We refrain from using tertiary sources. To understand how we maintain the accuracy and up-to-date nature of our content, please read further about how we test.

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