Silentnight UltraGel 3000 Mirapocket Box Top Firmer Mattress
- In-stock
- Finance available
- Free delivery
- Returns
- Feature: Hypoallergenic
- Support: Pocket Spring
- Comfort: Gel Foam
- Feel: Firm
- Brand: Silentnight
From £645.00
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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 UltraGel 3000 Mirapocket Box Top Firmer Mattress
Last checked
Back-sleepers looking at this Silentnight are being offered a firm, 5 of 5 mattress with a fairly serious amount of spring engineering beneath the box top. This is a tall, assertive build. The 35cm depth, 2000 Mirapocket support springs and 1000 mini pocket springs put it beyond a basic pocket-sprung mattress, although the 3000 count is not 3000 full-depth support springs; it is a combined figure, with the mini springs working mainly in the comfort stack. That is still a generous construction compared with standard 1000-pocket mattresses, especially because the centre-third zoning gives the lower back and hips firmer resistance rather than the same pushback from head to foot. The UltraGel foam layer is the comfort story: more responsive than slow-sinking memory foam, designed to spread pressure without letting the sleeper drop too far into the mattress. The box-top finish adds a defined cushioned layer, but this is not a plush pillow-top in the soft hotel-bed sense. It remains a firm mattress first, with gel foam and mini springs moderating the surface rather than changing the overall tension. Single-sided construction is convenient, and four side handles matter on a mattress this deep, but rotation will still be a two-person job for many households.
Back sleepers are the clearest match, especially those wanting a high, supportive mattress that resists sagging through the middle and keeps the pelvis from dipping. The 4.7-star average from 180 ratings fits the pattern in the fuller feedback: happier accounts repeatedly describe strong support, better sleep, less back ache and noticeably less roll-together than on older mattresses, which makes sense given the pocketed spring unit and firmer centre zone. The pressure caveat is real. Side sleepers, lighter builds and people with pronounced hips or shoulders may find the firm surface too unyielding, and one detailed account describes needing a topper because joint pressure built up after short periods, which contradicts the broad pressure-relief promise if the sleeper needs deeper contouring. Height is another recurring practical issue: the 35cm profile looks substantial and several buyers like the deep build, but shorter people may find the bed edge high once it is placed on a divan or tall frame. Weight also crops up, with movement and protector fit becoming more awkward than on slimmer mattresses. The lowest scores are short on detail, but dissatisfaction centres on comfort failing to match expectation rather than obvious faults in stitching or spring noise. For back sleepers and some front sleepers wanting a firm, deep gel-and-pocket mattress with good partner stability, this is the right call. For side sleepers with sensitive shoulders or hips, a softer pocket-sprung hybrid tier is the better direction instead.
Pros and Cons
Pros
- Firmer finish supports proper spinal alignment for improved sleep quality.
- UltraGel foam layer reduces pressure points and eases discomfort during sleep.
- Zoned Mirapocket spring system minimises motion transfer and enhances individual support.
- Handles on the sides make it easier to move despite the mattress weight.
Cons
- Deep height may pose challenges for shorter individuals when getting in and out of bed.
- Firmer feel can cause discomfort for some users after extended periods of sleep.
- Heavy weight makes repositioning difficult for some users.
- Initial comfort may decline for those seeking prolonged soft support.
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.
Medium to Firm
Brandishing a "medium to firm" categorisation, this refers to the desired balance between support and comfort. Typically, such a rating means you'll experience an optimal distribution of your body weight while ensuring pressure points like hips and shoulders won't sink too deeply, thereby resisting counterproductive sagging and promoting aligned posture.
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.
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.
Mini pocket springs
Harnessing the utility of mini pocket springs, you'll witness substantial improvement in tailored support and pressure relief. Furthermore, with the higher spring count, even distribution of weight becomes a guarantee, ensuring a restful and undisturbed night's sleep.
Tufted
Tufting is a great feature as it helps secure the fillings inside helping to promote even settlement while ensuring all fillings remain consistent. The result of tufting is a slightly firmer feel combined with great consistently across the entire mattress.
Approved by Allergy UK
Allergy UK approval indicates the mattress is less likely to trigger allergic reactions, hence providing more comfort for those with sensitivities. However, regular cleaning is necessary to effectively maintain its hypoallergenic properties.
35cm deep
Expect a tall mattress that can feel more supportive and cushioning, with less risk of feeling the bed base through it. Plan for added weight and bulk, which can make turning it, lifting it, and fitting standard fitted sheets more difficult.
UltraGel
UltraGel technology in the item provides a cooling sensation, making it ideal for those who often feel overheated during sleep. The inclusion of 3000 Mirapocket springs offers tailored support and pressure relief, enhancing overall comfort.
Includes turning handles
Turning handles aid in the regular rotation of the mattress, thereby significantly extending its lifespan. Easy maintenance is always appreciated, and these handles streamlining the process by making rotation hassle-free and manageable.
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.
Geltex
With an innovative construction, this item offers a unique blend of breathability, pressure relief, and body support. The inclusion of a pillow top layer enhances comfort levels, elevating your sleep experience to new heights.
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.
Pillow top
A pillow-top layer gifts you with an additional layer of pure comfort and softness. It capitalises on reducing pressure points and enhancing back support which could contribute to a more restful and pain-free sleep.
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.
Mirapocket springs
Pocketed coils compress separately, giving your hips and shoulders more local give. Because each coil moves on its own, cheaper builds can lack edge firmness and may feel busy under very restless sleepers.
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.
Made in the UK
This 100% UK made product is the perfect choice for a home with a sense of individuality. Sleep in comfort with the knowledge that you'll waking up refreshed and ready for another day.
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 UltraGel 3000 Mirapocket Box Top Firmer 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 P1869 in the subject line.
Reader reviews of the Silentnight UltraGel 3000 Mirapocket Box Top Firmer 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 P1869 in the subject line.
Pleasantly surprised by how supportive and comfortable this mattress is, and it's hypoallergenic too. Just be mindful, it's quite heavy to move around.
Lovely well made comfortable mattress. No roll together or rolling off the edge as with my last one. Combined with a new pillow my back ache has eased.
excellent all around. a good nights sleep every night.
Excellent bed, well made and finished. Provides great support and very comfortable.
Comfortable and supportive
Nice & comfortable no dips good for your back.
Its the most comfortable mattress we had and is worth the money
Expensive but very comfortable materess. I love it and recommend .
Lovely mattress - having a good night's sleep since purchase!
Just very comfortable and supporting.
Mattress is outstanding just what I was looking for.
so comfy, grateful for a decent night's sleep finally!
Good support, comfortable with good control for not overheating. Handles for rotating
As expected for the price
Never slept better so comfortable unbelievable
Very comfortable and has cured some of my minor back aches.
Very comfortable! Best Mattress I've ever brought.
Very easy to lay on and gives very good support
The support it gives me is the best.
Very good mattress well supported
Verified retailer reviews
Independent Trustpilot reviews of Mattress Online.
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