Available 
Silentnight UltraGel Cool-to-Touch 3000 Mirapocket Firmer Mattress
from £725-£1,159.
£725-£1,159
Sizes tracked: Single, Small Double, Double, King Size
Silentnight Pocket Sprung
Silentnight UltraGel 3000 Mirapocket Box Top Firmer Mattress review
Silentnight UltraGel 3000 Mirapocket Box Top Firmer Mattress is a firmer pocket sprung shortlist option with five sizes, a 100-night comfort trial and a 5 Year Guarantee to compare before buying.
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Last verified: 2026-07-21
Quick verdict
Silentnight UltraGel 3000 Mirapocket Box Top Firmer Mattress is a firmer-support shortlist option for shoppers comparing pocket sprung mattresses from Silentnight and similar brands. The key checks are the current price, the exact size you need and whether the firmer feel matches your usual comfort preference. Mattress Online also lists a 100-night comfort trial and a 5 Year Guarantee, which are useful reassurance points, but they should be rechecked at checkout because terms and stock can change.
Available sizes and prices
Silentnight UltraGel 3000 Mirapocket Box Top Firmer Mattress is listed with 5 size options from £759-£1,295. The visible sizes include Single, Small Double, Double, King Size, so use the table to compare the option that matches the exact size, colour, format or specification you want. Always confirm the final checkout price, delivery charge and stock status on the retailer page.
| Size | Firmness | Price | Stock | Last checked | Link |
|---|---|---|---|---|---|
| Single | Check retailer | £759 | In stock | 2026-07-21 | View |
| Small Double | Check retailer | £925 | Check retailer | 2026-07-21 | View |
| Double | Check retailer | £925 | Check retailer | 2026-07-21 | View |
| King Size | Check retailer | £1,095 | Check retailer | 2026-07-21 | View |
| Super King | Check retailer | £1,295 | Check retailer | 2026-07-21 | View |
Key product details
These are the retailer details worth checking first for Silentnight UltraGel 3000 Mirapocket Box Top Firmer Mattress: Brand: Silentnight; Type: Pocket Sprung; Sizes tracked: Single, Small Double, Double, King Size, Super King; Price range: £759-£1,295. Treat them as a quick fact sheet, then use the retailer page to verify any installation, warranty, delivery or model-number details before buying.
| Brand | Silentnight |
|---|---|
| Type | Pocket Sprung |
| Sizes tracked | Single, Small Double, Double, King Size, Super King |
| Price range | £759-£1,295 |
| Owner rating signal | 4.7 out of 5 shown; review volume needs checking with the retailer |
| Last checked | 2026-07-21 |
What the retailer listing says
The Mattress Online page identifies this as a Silentnight pocket sprung mattress with Mirapocket springs, UltraGel comfort fillings and a firm firmness rating. It also highlights a 100-night comfort trial, a 5 Year Guarantee and that the mattress is handcrafted in the UK. Those details help you compare the model’s support-led positioning against softer or more temperature-focused alternatives, but they are retailer listing details rather than independent performance proof.
What stands out from the comparison research
This mattress sits in the £759-£1,295 range across five tracked sizes: Single, Small Double, Double, King Size and Super King. That places it above the median for comparable pocket sprung mattresses, so it is not a budget pick; you are mainly paying for the Silentnight branding, the firmer feel, the box top format and the size coverage. The visible 4.7 out of 5 rating and 180 reviews are a positive sign, but they should be read as supporting context, not as a substitute for checking the current product page and comparing it with nearby Silentnight alternatives.
Trade-offs to weigh before you buy
The main trade-off here is support-led feel versus price. If you want a firmer mattress, this model keeps you within a familiar pocket sprung format, but the higher price band means it makes most sense when the size, firmness and retailer terms line up with your needs. Compare size-by-size pricing rather than the starting price alone, because the jump from Single to Super King is large enough to change value significantly. Also check whether the 100-night trial and 5 Year Guarantee are still offered in the same form, especially if you are weighing this against softer or cooler-feeling Silentnight models.
Price and value benchmark
At £759 to £1,295, this Silentnight sits in a premium-leaning bracket for a pocket sprung mattress with five tracked sizes. The value case is strongest if you want a firmer feel, a box top design and a broad size spread that includes Single through Super King. If you are mainly shopping on budget, there are lower-priced pocket sprung options in the wider category, so this model is better judged on fit, size and retailer reassurance than on headline price alone.
How it compares with nearby alternatives
For a like-for-like comparison, look at the Silentnight UltraGel 3000 Mirapocket Box Top Softer Mattress and the Silentnight UltraGel Cool-to-Touch 3000 Mirapocket Firmer Mattress. The Softer model keeps the same family name and size coverage, while the Cool-to-Touch version is priced lower in the tracked set and may appeal more if temperature comfort is part of your shortlist. A similarly priced non-Silentnight comparison such as the Sleepeezee Memory Ultimate 4500 Pocket Mattress is also useful if you want to compare brand context, size spread and support style rather than assuming one Silentnight is automatically the better buy.
How to read the review evidence
The visible rating is 4.7 out of 5 from 180 reviews, which is a helpful listing signal but not the same as independent active testing. It tells you the product has a meaningful amount of retailer review activity, yet it does not prove how it will feel for you or how it compares across every size. Recheck the current rating, review count, price and availability on Mattress Online before ordering, because those details can change.
Who this mattress suits
This mattress is most likely to suit comparison shoppers who want firmer support, a conventional pocket sprung feel and a choice of five sizes. It also makes sense if you value retailer reassurance points such as the 100-night comfort trial and 5 Year Guarantee, because those can help reduce commitment anxiety on a higher-ticket purchase. The broad size range is useful if you need to match the mattress to a smaller guest room, a standard double or a larger master-bed setup.
Who should look elsewhere
Skip this one if you prefer a softer feel, want a different construction type altogether or need a lower-budget purchase. For example, the Silentnight UltraGel 3000 Mirapocket Box Top Softer Mattress is the closer comfort comparison, while the Silentnight UltraGel Cool-to-Touch 3000 Mirapocket Firmer Mattress may suit shoppers who want a different take on the same brand family. If your budget is tight, a £759 starting price may still be too high, so it is worth comparing other pocket sprung options before deciding.
Comfort and support
The useful comfort clues here are the Silentnight pocket sprung build, the Mirapocket spring system, the UltraGel comfort fillings and the firm firmness rating, with the starting price shown from £759. In shopper terms, that points to a mattress aimed at support-led comfort rather than a plush, sink-in feel, while still keeping a box top format that may feel more cushioned at the surface than a plain sprung design. If you usually buy by sleep position, body feel or bed-frame fit, the right comparison is how this construction and firmness line up with your normal preferences, not whether it promises any health outcome.
Value check
Value comes from the mix of five sizes, a firm pocket sprung build, the 100-night comfort trial and the 5 Year Guarantee. That is a decent reassurance package for a mattress in the £759-£1,295 bracket, but it only feels good value if the firmer feel is actually the one you want. Before clicking through, verify the size you need, the live price, delivery options and whether stock is available for that specific variant.
Good alternatives to compare
The closest alternatives to compare with Silentnight UltraGel 3000 Mirapocket Box Top Firmer Mattress include Silentnight UltraGel Cool-to-Touch 3000 Mirapocket Firmer Mattress, Sleepeezee Memory Ultimate 4500 Pocket Mattress, Silentnight UltraGel 3000 Mirapocket Box Top Softer Mattress. Use these cards to check whether a nearby model gives you a better price, a more suitable specification or a clearer match for your space and budget.
Available 
Sleepeezee Memory Ultimate 4500 Pocket Mattress
from £764-£1,259.
£764-£1,259
Sizes tracked: Single, Small Double, Double, King Size, Super King
Available 
Silentnight UltraGel 3000 Mirapocket Box Top Softer Mattress
from £718-£1,298.
£718-£1,298
Sizes tracked: Single, Small Double, Double, King Size, Super King
Retailer details used
Last checked 2026-07-21. The source list below is included to help you check the details behind the comparison. Always confirm the latest price, delivery cost, stock status and product details with the retailer before buying.
More mattresses to compare
These related guides and reviews can help you compare nearby options before buying.
Questions about this mattress
Is the Silentnight UltraGel 3000 Mirapocket Box Top Firmer Mattress worth considering if I want a firmer feel?
Yes, it is a sensible shortlist option if you want firmer support and a pocket sprung feel. The current listing also shows a 100-night comfort trial and a 5 Year Guarantee, so it offers a useful reassurance package, but you should still check the live price and size availability before buying.
How does the price vary by size?
The tracked range runs from £759 to £1,295, with different prices by size. Single is listed at £759, Double at £925, King Size at £1095 and Super King at £1295, so it is worth comparing the exact size you need rather than focusing on the starting price alone.
What should I compare before choosing this mattress?
Compare the firmer feel against the softer Silentnight alternative, check whether the 100-night comfort trial and 5 Year Guarantee still apply, and confirm stock for the size you want. It is also worth checking delivery, setup and old-mattress removal options if those matter to your purchase.
Is the 4.7 rating and 180-review count enough to rely on?
It is a helpful sign that the listing has attracted a solid amount of customer feedback, but it should be treated as supporting context rather than proof of how the mattress will suit you. Recheck the current score, review count and retailer details at checkout because they can change.
How does this compare with the softer and cool-to-touch Silentnight alternatives?
The Softer version is the closest comfort comparison, while the Cool-to-Touch 3000 Firmer model may be better if you want to compare price and temperature-comfort positioning. Looking at those side by side can help you decide whether this firmer box top model is the better fit for your room, budget and comfort preference.