Silentnight Seoul Miracoil Memory Mattress
- In-stock
- Finance available
- Free delivery
- Returns
- Feature: Hypoallergenic
- Comfort: Memory Foam
- Brand: Silentnight
From £279.00
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BedBoy Score
A composite score drawn from aggregated customer sentiment across verified reviews, with construction-type benchmarks for categories where reviewer commentary is limited. See our scoring methodology.
across 8 measured categories
Per-category breakdown below. The composite is the unweighted mean of every scored category, rounded to one decimal place.
- Brand
- Silentnight
- Retailer
- Mattress Online
- Delivery time
- Good
- Customer sentiment
- Excellent
- Guarantee
- Excellent
About the Silentnight Seoul Miracoil Memory Mattress
Last checked
For a sleeper trying to firm up an unsupportive bed without moving into a deep, sink-in foam build, the Silentnight Seoul Miracoil Memory Mattress is a straightforward sprung mattress with a shallow memory-foam surface. The construction is 24cm deep, with Silentnight’s Miracoil spring unit, zoned support for the hips and lower back, edge support, a knitted micro-quilted cover and a 2cm memory-foam layer on top. The foam layer is deliberately modest. A 2cm memory-foam cap over linked Miracoil springs is conservative for a memory mattress; compared with thicker memory-foam hybrids, the foam here softens the first contact rather than setting the whole feel of the mattress. The firm feel therefore comes mainly from the spring system, not from a dense foam stack, so the support is broad and stable but less independently responsive than a pocket-sprung unit. The zoned Miracoil design is more sophisticated than a basic open-coil mattress, especially through the middle third, but it still has a connected spring character, which matters for movement and long-term noise. Single-sided care keeps maintenance simple: rotate it rather than flip it. At 24.5kg in double and 28.5kg in king size, it is manageable by mattress standards, though still a two-person lift for most homes, and the 5-year guarantee is honest for this entry-level memory-foam tier.
Back-support needs are the clearest fit, and the 4.6-star average from 391 ratings is strongest where people wanted a properly firm mattress rather than a plush one. Several accounts describe reduced back pain, better support and a cool enough sleep surface, which lines up with the thin foam layer and knitted cover: there is less heat-trapping foam here than on deeper memory-foam builds. The comfort story is firmer than cushioned. A recurring criticism is that the memory foam is barely noticeable, with one longer account wanting a thicker comfort layer and another heavier sleeper, at 103kg, finding the back support effective while warning that the foam feel is minimal. Low-scoring feedback is sparse but pointed: the mattress can look acceptable while disappointing on feel, and one detailed complaint mentions lumpiness and creaking during movement. Couples get edge support and a no-roll-together design on paper, yet the linked Miracoil unit will not isolate fidgeting as cleanly as pocket springs, especially if partners differ sharply in weight. Side sleepers who rely on shoulder and hip cushioning may find the firm surface short on give, while back sleepers and some front sleepers are better aligned with the build. For firm back support, low-maintenance care and light memory-foam cushioning, this is the right call. For a softer contour or quieter partner isolation, look at the mid-range pocket-sprung hybrid tier instead.
Pros and Cons
Pros
- Relieves back pain with extra support for lower back areas.
- Memory foam layer hugs body shape, providing pressure relief.
- Edge support prevents roll-off, enhancing stability for restless sleepers.
- Zoned design offers tailored support for different body areas during sleep.
Cons
- Firmer than expected, some prefer a softer sleeping surface.
- Memory foam layer may feel minimal for those wanting more cushioning.
- Creaking noises reported when moving on the mattress.
- Some find the mattress lumpy upon initial use.
Price Tracker
Written by
Giselle Green, Editor in Chief
Last checked by Giselle Green on . Scoring follows our scoring methodology.
Specifications
Manufacturer specifications without the jargon, easy to scan and compare.
No roll-together
Crafted with innovative technology, this item ensures independent sleeping zones, eradicating disruptions caused by movement by one person, thereby offering you a serene night's sleep. Furthermore, this distinctive attribute aims to promote even weight distribution, essentially contributing to better sleep posture and relieving areas of high pressure, ensuring you wake up refreshed and invigorated each morning.
24cm deep
Featuring a substantial depth of 24cm, this mattress provides ample cushioning and support, catering to varying sleep preferences with its luxuriously cozy yet supportive feel. The enhanced depth also suggests a higher level of material build, implying improved durability and longevity, encouraging an extended mattress lifespan that's a beneficial investment for the long run.
Knitted cover
A knitted cover spells out a blend of cosiness with breathability, providing a comforting touch that many crave while ensuring your temperature remains well regulated throughout the night. This feature pairs comfort and functionality in a coveted balance, contributing to an intimate sleep environment that is warm, inviting, yet refreshingly aerated.
Fire Resistant
Ensuring safety during your peaceful slumber, fire resistance is a crucial feature that reduces the risk posed by potential accidents involving flammable materials. Furthermore, it demonstrates the manufacturer's commitment to adhere to strict safety standards, prioritizing your well-being over all else.
National Bed Federation Approved Brand
Receiving approval from the National Bed Federation indicates that the product meets specific industry standards and quality benchmarks. This approval serves as a reassurance of the product's reliability and durability, though discerning buyers may still want to consider personal comfort preferences.
Lower back support
You'll find comfort in knowing that lower back support benefits considerably from this mattress's construction. It can work wonders in maintaining spinal alignment, thus enhancing sleep by reducing discomfort, particularly for individuals accustomed to sleeping on their sides.
Firm
Firmness in a mattress indicates robust support for your spine, reducing the risk of back pain and contributing favourably to your posture. Still, it might not be suitable for those who prefer a softer surface or side sleepers, who could find such solidity uncomfortable.
Vegan-friendly
Plant-based or synthetic fillings avoid wool, silk or other animal-derived fibres, leaving the surface suitable for shoppers avoiding animal materials. Check cover materials and fire barrier details where allergies are involved.
Approved by the National Bed Federation
Factory auditing checks that the mattress is made under UK rules for flammability, fillings and labelling, giving you a clearer paper trail for what arrives at home. It doesn't prove comfort, firmness or long-term durability.
5 year guarantee
Fault cover puts manufacturing problems in writing, making a loose strut, failed fixing or collapsed padding less of a gamble after delivery. Accidental damage, fabric marks and poor fitting usually sit outside it.
Hypoallergenic
Hypoallergenic mattresses are the perfect choice for those with allergies or sensitivities, as they protect against allergens and irritants. They're also a great choice for those with asthma or respiratory issues.
Miracoil springs
Linked wire coils spread body weight across the mattress, giving your hips and shoulders a steadier surface and helping reduce the dip towards the middle. Couples may prefer pocket springs for calmer movement.
Pressure relief
Softer comfort layers let shoulders and hips sink slightly into the surface, spreading body weight before you feel sharper points building. Front sleepers may want firmer support to keep the hips level.
Reinforced mattress edge
Firmer sides help the mattress hold its shape when you sit or sleep near the border, giving you more usable width across the bed. It won't stop a soft comfort layer dipping under weight.
Memory Foam
Foam in the comfort layer softens under body heat, letting shoulders and hips sink closer into the surface while reducing sharp pressure points. It can feel warmer and slower to move on.
Handcrafted in the UK
Factory workers assemble and finish the mattress by hand, leaving small variations in stitching or edge detail you may notice up close. It doesn't prove better support or longer life.
Single-sided
Bed-making is simpler because the comfort layers stay on the top face, leaving the underside to stabilise the mattress while you lie on the cushioned surface. Don't flip it over.
Frequently Asked Questions For The Silentnight Seoul Miracoil Memory Mattress
The questions below are the most common ones BedBoy readers ask when comparing products in this category. Contact the editorial team with a different question, quoting P1059 in the subject line.
Reader reviews of the Silentnight Seoul Miracoil Memory Mattress
BedBoy publishes reader-submitted reviews to broaden the sentiment sample. Reviewer purchase status is not independently verified at submission. For verified-purchase ratings, see the Trustpilot block below. Submit a review, quoting P1059 in the subject line.
Comfortable mattress with good support for the back. Sleeps pleasantly cool and definitely offers restful nights.
A good night's sleep
Excellent quality for the price. Perfect mattress with very good support and comfort.
Very lightweight so easy to rotate. Has maintained the no roll together feature so far.
Nice depth, good firmness.
Perfect. Did a lot of research and this mattress ticked all the boxes. Really pleased with it and it's got the right support for us and is so comfy. The memory foam layer isn't too 'swallowing' either.
Improvement Points: none
Comfortable, great sleep. Looks really nice.
I suffer with back pain and this firm mattress gives me real back support so less pain
Depth of mattress and so comfortable
Really comfortable
Firm back pain is reduced from extra support.
everything
Best mattress I have ever purchased.
Great Mattress
Brilliant mattress , very pleased with my purchase ; great v.f.m. considering the quality of the mattress.
Great if you like a firm mattress.
Depth of mattress, firmness and style
Very firm and comfortable- no more waking up with a sore back and neck. 10/10
Extremely comfortable
Verified retailer reviews
Independent Trustpilot reviews of Mattress Online.
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