Silentnight Rest Assured Nimbus 2000 Pocket Refresh Double Mattress - Firmer
The Rest Assured Nimbus 2000 Pocket Refresh is a pocket spring mattress from Silentnight, sold in softer and firmer versions; this is the firmer one.
- Wicks moisture to keep you cooler
- Firm support with a cushioned top
- 60-night trial & 5-year guarantee
£790
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Silentnight Rest Assured Nimbus 2000 Pocket Refresh Mattress - Firmer
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Mattress details
Mattress
Silentnight Rest Assured Nimbus 2000 Pocket Refresh Mattress - Firmer
Size
Firmness
Firm
Construction
Pocket Spring
Depth (cm)
35
Layers
5
Layer Details
Quilted pillowtop
A quilted pillowtop with an advanced breathable sleep system, which means a soft, cushioned surface that's designed to stop you overheating through the night.
Refresh Fibres
Vertical Refresh Fibres quickly channel moisture away from your body. In practice, that means sweat is drawn off before it can leave you feeling clammy.
British wool and fresh fibres blend
Layers of British wool blended with sustainable fresh fibres. Wool naturally regulates temperature, adding a premium, comfortable feel that supports deep, restorative sleep.
Fresh fibres
Horizontally arranged sustainable fresh fibres evaporate moisture out through the breathable mesh border. This helps keep the sleeping environment clean and fresh over time.
Pocket spring support system
Individual pocket springs adjust to your body weight, which means support tailored to your shape rather than a one-size feel. They also isolate movement, so a restless partner is less likely to wake you.
Layer details from silentnight.co.uk product page, September 2026.
Key benefits
- Room for two in a normal bedroom: At 135 x 190cm it fits comfortably in most UK bedrooms, which means space left over for a wardrobe and drawers rather than a bed wall to wall.
- 67.5cm each for two people sharing: That's your own defined stretch of firm pocket-sprung support, enough for most couples who sleep close rather than sprawled.
- Less disturbance in a shared bed: Individual pocket springs isolate movement, which matters most at this width, where a restless partner is never far away.
- Bedside tables on both sides: Allow at least 2.6m x 2.8m of floor space and a UK double usually leaves room for a table each side, something a UK king often sacrifices.
- Easy to dress: Double bedding is stocked everywhere at every price, though the 34.5cm depth means you'll want deep fitted sheets rather than standard ones.
This size suits you if...
You share the bed every night and want the traditional couples' size that still leaves your room feeling like a room. It also suits you if you sleep alone but like space to spread out, or a pet claims a corner most nights, and you want firm support with a cushioned pillowtop rather than a soft, sinking feel.
Consider another size if...
You have a bigger room, around 2.7m x 2.9m or more, and you'd both appreciate extra space. We'd recommend the UK king instead: it's 15cm wider and 10cm longer than the UK double, a real difference for two adults.
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FAQ's
Is the Nimbus 2000 in a UK double big enough for a couple?
For most couples, yes. Two people sharing get 67.5cm each, and the firmer pocket-sprung build keeps you supported on your own side rather than rolling together. The springs also isolate movement, which helps at this width. Broad-shouldered pairs or restless sleepers may prefer the UK king, which is 15cm wider.
What room size do I need for a UK double Nimbus 2000?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That allowance gives you walking space on both sides and, in most rooms, a bedside table each. If you're squeezing it into a first flat or second bedroom alongside a wardrobe and drawers, measure the floor before you order.
Will standard double fitted sheets fit this mattress?
Possibly not. The Nimbus 2000 Pocket Refresh is 34.5cm deep, and standard double fitted sheets often won't stretch over a mattress that substantial. Look for deep or extra-deep fitted sheets in a UK double (135 x 190cm). Flat sheets, and a standard 200 x 200cm double duvet, are unaffected.
Should I choose the Nimbus 2000 in a UK double or a UK king?
It comes down to your room. The UK double is 15cm narrower and 10cm shorter than the UK king, and we suggest 2.7m x 2.9m as a minimum for the UK king against 2.6m x 2.8m for the UK double. Taller sleepers should note the length difference: the UK king gives extra legroom.
Will a UK double mattress fit up a narrow staircase?
Usually, but plan the route first. At 135 x 190cm and 34.5cm deep, this firmer version is a substantial, rigid mattress that won't bend around tight turns the way a rolled foam one might. Measure any turning stairs in older terraces or narrow new build landings, and check Silentnight's delivery guidance before you buy.