Silentnight Castleton 800 Pocket Eco Mattress Rated 5.0/5 based on 1 customer reviews
Silentnight Castleton 800 Pocket Eco Mattress

Silentnight Castleton 800 Pocket Eco Mattress

sleeping cat
10p 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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Tests & Verdict

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 12+ years of industry insight.

Extremely competitive value proposition, although the spring count is lower than some, the pocket springs do not often come up at this sort of price point.

Eco comfort fibres are a proven and preferred choice for many who have bought a Silentnight mattress in the last decade.

All sizes available at very reasonable prices.

No long term reviews as of yet, although the medium tension pocket springs in low quantities have been knocking around for a few years and come well reviewed, same for the eco comfort layer.

Fairly long lead time of 3 weeks at time of review, not ideal if you need in a hurry.

Not suitable for some dedicated back sleepers who are of the heavier variety.

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.
Toss and turn icon
Good for those who toss and turn
Materials like memory foam can restrict movement.

Still not sure if the Silentnight Castleton 800 Pocket Eco Mattress is suitable for you? Answer 4 simple questions with our quiz.

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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 Castleton 800 Pocket Eco Mattress may feel.

weight description image

Why our sleep experts loved it

Silentnight, a renowned brand in the bedding industry, has introduced the Castleton 800 Pocket Eco Mattress to their lineup to be sold through the popular retailer Dreams. As part of the brands continuous innovation, the Eco Comfort fillings feature prominently in their new releases, primarily due to the overwhelming customer admiration for their blend of comfort and environmental responsibility. Pairing this with pocket springs, a hallmark of mid-to-high-end mattress construction, this mattress promises to deliver premium comfort without the hefty price tag. Interested to learn more around suitability? Let’s take a closer look.

For Whom It Will Suit

The Castleton 800 Mattress with its medium tension is a versatile choice for average-weight individuals, regardless of their sleeping position - be it back, stomach, or side. Its breathability, a trait inherited from the Eco Comfort fibres, will undoubtedly be appreciated by those who tend to sleep hot. Moreover, the mattress's Mirapocket® springs offer tailored support, adapting seamlessly to the body’s contours, ensuring a peaceful sleep for most individuals.

For Whom It Won't Suit

This Silentnight mattress may not be the optimal choice for individuals on the heavier side or those with specific orthopaedic needs. While its medium tension caters to a broad audience, those needing more rigorous support or reduced sinkage might find this mattress lacking.

How Firm Is It

Crafted with a medium comfort grade, the Castleton is suited for all sleeping positions, catering especially to those of average proportions.

Benefits of Comfort Layer

The comfort layer stands out, thanks to Silentnight's Eco Comfort Fibres™. These sustainable fibres, derived from recycled plastics, offer more than just a nod to environmental responsibility as they provide excellent breathability to ensure a cool and moisture-free sleep environment. This layer is also fully recyclable, promoting a sustainable and eco-friendly mattress lifecycle.

Benefits of Support Layer

At the heart of the Castleton lies its 667 Mirapocket® springs. This spring system surpasses traditional reflex foam and open coil springs in terms of targeted support and durability. Each pocketed spring operates independently, offering zoned support tailored to the sleeper's body, ensuring even weight distribution and reducing pressure points.

What Do Customers Think?

Although the product is a newcomer to the market, it's design follows Silentnight's established patterns of integrating pocket springs and Eco Comfort fillings. This combination has historically received positive feedback, suggesting that this mattress will likely become a customer favourite. Offering mid-range quality at a lower than typical price, it's an attractive prospect for many on a budget who still want to experience a reasonable degree of luxury.

How Much Does It Cost?

Priced significantly under £400 for a double, the bed offers a balance of quality and affordability. Considering the pocket springs and the intricate design, this price point is quite competitive compared to other products we have seen from competing retailers and brands.

Final Thoughts

The Silentnight Castleton 800 Pocket Eco Mattress epitomises a balance between luxury, sustainability, and affordability. With its tailored support from Mirapocket® springs and the breathable comfort from Eco Comfort Fibres™, it's a worthy addition to brands repertoire and a promising option for discerning sleepers.

Why you can trust WantMattress We spend hours testing (and/or researching) every product or service we review, so you can be sure you’re buying the best. Find out more about how we test.


The price graph displays the lowest price over time excluding shipping.

Quantitative Measurements KPI question mark
Of The Silentnight Castleton 800 Pocket Eco 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.


  • 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.


Let us know your thoughts on a product or view reviews from others. Please note that WantMattress does not verify whether the user has used or purchased the product.

5 - 1 reviews

Image of the post author
via Dreams
Quality mattress with lovely medium comfort. The Mirapocket springs provide excellent zoned support where needed and combined with Eco Comfort Fibre layer, which makes this mattress extra breathable and perfect if you get hot during the night.
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Questions and Answers About The Silentnight Castleton 800 Pocket Eco Mattress

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Of The Silentnight Castleton 800 Pocket Eco Mattress
Brand: Silentnight
Retailer: Dreams
Delivery Time: Average
Delivery Charge: Excellent
Customer Sentiment: Excellent
Guarantee: Good

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 Castleton 800 Pocket Eco Mattress

Eco Comfort Fibres
Eco Comfort Fibres
By MattressNextDay
What is Hypoallergenic?
What is Hypoallergenic?
By Karen Kelley Perkins
About Silentnight
About Silentnight
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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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