Last seen for £489 at Silentnight on 2nd September 2026
Silentnight Just Sleep Bliss Single Mattress
The Silentnight Just Sleep Bliss is part of Silentnight's Just Sleep bed-in-a-box collection.
- Medium-firm feel with cushioning
- Absorbs movement, so less disturbance
- Breathable open-cell structure
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
More available sizes
Last seen for £489 at Silentnight on 2nd September 2026
Last seen for £639 at Silentnight on 2nd September 2026
Last seen for £579 at Silentnight on 2nd September 2026
Mattress details
Mattress
Silentnight Just Sleep Bliss Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
Layers
Layer Details
Key benefits
- Fits almost any room: We suggest allowing at least 2.1m x 2.8m of floor space, which most UK bedrooms clear comfortably, even boxrooms and loft conversions with a narrow footprint.
- Leaves space for everything else: In a child's room the bed has to share the floor with a wardrobe, a desk and toy storage, and a 90cm width leaves room for all of it.
- Two beds where one won't do: For siblings sharing or a guest room set up with twin beds, two UK singles plus a walkway fit where a larger size simply wouldn't.
- The cheapest bedding to run: Single sheets and a 135 x 200cm single duvet are the most widely stocked and lowest priced bedding of any UK size, which keeps ongoing costs down.
- Made for standard frames: At 90 x 190cm it matches UK single bed frames, divans, bunks and mid sleepers, so a frame you already own should accept it without fuss.
This size suits you if...
You're buying for a child or teenager, kitting out a spare room or student flat where the frame is already provided, or you sleep alone and want to keep floor space free. It also suits rooms where a bed under a sloping ceiling or beside a desk rules out anything wider.
Consider another size if...
You're an adult who shares the bed, or you find 90cm restrictive as a solo sleeper. 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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FAQ's
How much room do I need for the Silentnight Just Sleep Bliss in a UK single?
We suggest allowing at least 2.1m x 2.8m of floor space. That gives you room to walk alongside the bed and open drawers or a wardrobe. The mattress itself is 90 x 190cm, so even a compact child's room or a loft conversion with a sloping ceiling will usually take it.
Will the UK single Just Sleep Bliss fit a bunk bed or mid sleeper?
The 90 x 190cm footprint matches standard UK bunk and mid-sleeper frames, so the width and length are right. Raised frames often have a maximum mattress depth for safety rails, and Silentnight doesn't currently publish a depth for this model, so check the frame's limit against the retailer's listing before buying.
Is the UK single Just Sleep Bliss big enough for an adult?
Plenty of single adults sleep well on 90cm, and it's the standard choice for student rooms and first flats where the frame is already supplied. If you tend to spread out, or you're tall, the UK double is 45cm wider and the same length, so sizing up is the usual next step.
What bedding do I need for this size?
Standard UK single bedding fits: single fitted sheets and a 135 x 200cm single duvet. This is the cheapest and most widely stocked bedding size in the UK, so replacements are easy to find, which matters for children's beds and guest rooms where linen gets changed often.
Can I put two singles in one room for guests or siblings?
Often, yes. Each UK single is 90cm wide, so two beds side by side with a walkway between them need roughly the same width as one large bed plus circulation space. It's a flexible setup for siblings sharing or a guest room, since the beds can be separated or pushed together as needed.