Firmness
Medium
Type
Pocket Spring
Depth (cm)
24
Number of Layers
3
Trial Period (nights)
100
Warranty (years)
5
Price Range
£215 to £395
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
This is a mattress for buyers who want a recognisable brand and proper pocket springs without spending serious money. The medium firmness suits most back and side sleepers, giving enough give at the shoulder and hip while keeping your spine reasonably level. The recycled fibre fillings are a genuine plus if sustainability matters to you, and the Silentnight brand holds B-Corp certification. Yes, the fillings are fibre rather than foam or natural materials, but that keeps the price down and helps airflow, which hot sleepers will appreciate. Mattress Online lists a 100-night trial (which requires buying a mattress protector from them) and a 5 year guarantee, terms that apply to purchases from that retailer.
Key Features & what's inside
- Cover. A knitted, microquilted soft-touch cover, which means a slightly cushioned, cosy surface the moment you lie down. It's designed for enhanced airflow and breathability, so warmth doesn't build up against your skin.
- Comfort Layer. Eco Comfort Fibre fillings that are 100% sustainable and made from recycled materials. They offer cooling and breathability, so you get cushioning without the heat retention some foams can bring.
- Support System. 1000 individual Mirapocket springs, each encased in its own fabric pocket and strengthened by polyester walls. Because each spring responds independently to your body shape, you get pressure relief where you sink and support where you don't.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
If you prefer a distinctly firm or plush surface, the medium feel here won't suit. Fans of memory foam contouring should look elsewhere too, as the fillings are fibre. Some owners mention the lack of handles, so if you rotate your mattress often, that's a small but real annoyance.
Silentnight Essentials Mirapocket 1000 Mattress
Across 1,472 reviews on the Mattress Online product page, rated 4.6, owners describe a comfortable, supportive medium-firm feel that works for back and side sleeping. Some mention the lack of handles makes it awkward to move, but material quality and value for the price come in for praise.
View all mattresses
Is the Silentnight Mirapocket 1000 firm or soft?
It's a medium. That places it in comfortable territory for most back and side sleepers, offering give at pressure points with support underneath. If you're a heavier person who prefers a properly firm surface, or a lightweight sleeper who likes a soft, sink-in feel, it may not be the right match.
How many springs does the Mirapocket 1000 have?
It contains 1000 individual pocket springs, each sealed in its own fabric pocket and strengthened by polyester walls. Because the springs move independently, the mattress follows your body shape and helps limit motion transfer, useful if you share a bed with a restless partner.
Does the Silentnight Mirapocket 1000 come with a trial?
Mattress Online lists a 100-night trial with this mattress, though it requires buying a mattress protector from them, and the trial is that retailer's own offer rather than a Silentnight guarantee. If you buy elsewhere, check that retailer's returns terms before ordering.
How long is the guarantee on the Mirapocket 1000?
The Mattress Online listing states a 5 year guarantee. As this appears on a retailer's page rather than Silentnight's own site, confirm the guarantee terms with whichever retailer you buy from.
Is the Silentnight Mirapocket 1000 good for hot sleepers?
It should cope well. The Eco Comfort Fibre fillings and knitted microquilted cover are both designed for airflow and breathability, and fibre generally holds less heat than memory foam. No mattress can guarantee a cool night, but the construction here works in your favour.
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