Silentnight Rest Assured Nimbus 2000 Pocket Refresh Mattress - Firmer
Mattress
Silentnight Rest Assured Nimbus 2000 Pocket Refresh Mattress - Firmer
Size
Firmness
Firm
Construction
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.
- A grown-up build in a one-person footprint: Pocket springs that adjust to your body weight give a solo adult proper tailored support, without paying for width you'd never use.
- Fits where bigger sizes can't: At 90cm wide with our suggested minimum of 2.1m x 2.8m, it suits box rooms, loft conversions and spare rooms that double as an office.
- Firm support for growing sleepers: The firmer tension gives teenagers and heavier solo sleepers a stable, supportive surface rather than the sink of a softer bed.
- Cooler nights in a small room: Refresh Fibres channel moisture away through the breathable mesh border, which matters in compact bedrooms where air can sit still and warm.
- Cheap, easy bedding: Standard single sheets and a single duvet fit, though the 34.5cm depth means you'll need deep fitted sheets rather than standard ones.
This size suits you if...
You're a solo adult sleeper who wants a firm, substantial mattress in the standard one-person size, you're buying for a teenager who has outgrown a softer children's mattress, or you're furnishing a guest room or a spare room that also serves as an office and floor space is tight.
Consider another size if...
You share the bed, or the sleeper is a restless adult who'd appreciate more width. We'd recommend the UK double instead, which is 45cm wider and the same length; allow at least 2.6m x 2.8m of floor space for it.
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Will the Nimbus 2000 Pocket Refresh single fit a bunk or mid sleeper frame?
Probably not. At 34.5cm deep, this mattress is much taller than most raised frames allow. Bunk beds need the mattress to sit well below the safety rail, and cabin or mid sleeper frames have similar limits. Check your frame's maximum mattress depth before buying; for most raised frames, a slimmer single would be the safer choice.
Is the firmer Nimbus 2000 a good single mattress for a teenager?
It's a reasonable fit for older teens. The firm tension and pocket spring support suit growing bodies that need a stable surface, and the Allergy UK approval is a genuine reassurance for allergy-prone sleepers. Lightweight teens who sleep on their side may find it a little solid under the shoulders, in which case the softer variant is the better pick.
How much room do I need for the UK single Nimbus 2000?
The mattress itself is 90 x 190cm, and we suggest allowing at least 2.1m x 2.8m of floor space so you can walk around the bed and open drawers or wardrobe doors. That makes it workable in a child's room shared with a desk and toy storage, or under the slope of a loft conversion.
Is the UK single big enough for an adult on this mattress?
For most solo adults, yes. At 90cm wide and 190cm long it's the standard UK one-person size, and the pocket springs support you across the full surface. Very tall sleepers should note the UK king is 10cm longer, though it's also 60cm wider and needs a much bigger room, at least 2.7m x 2.9m by our guidance.
Does the UK single version feel the same as the larger sizes?
The construction is identical: the same firm tension, quilted pillowtop, British wool layers and pocket spring system. What changes is the space around you. On a UK single there's no spare width to spread into, which suits a still sleeper; if you move around a lot, the UK double gives you 45cm more width.