Silentnight UltraGel 3000 Pocket Firm Single Mattress
The Silentnight UltraGel 3000 Pocket Firm is a hybrid mattress, which means it pairs pocket springs with a comfort layer rather than relying on foam alone.
- Firm support for back & front sleepers
- Minimises partner disturbance
- Springs contour to your shape
£617.29
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Silentnight UltraGel 3000 Pocket Firm Mattress
More available sizes
Mattress details
Mattress
Silentnight UltraGel 3000 Pocket Firm Mattress
Size
Firmness
Firm
Construction
Pocket Spring
Hybrid
Gel
Depth (cm)
Layers
3
Layer Details
UltraGel comfort layer
A gel-infused comfort layer that Silentnight describes as responding to movement and easing pressure. For you, that means a surface that adjusts as you shift, with some cushioning on top of a firm feel.
Foam layer
A foam layer that Silentnight calls its most breathable foam yet, used together with the gel-infused layer above it. That should help the top of the mattress feel less stuffy as you sleep.
Boxtop
A boxtop that adds a softer, more cushioned finish and works with the springs below to give zoned support. You get a little comfort at the surface, while the firm feel underneath keeps you supported.
Layer details from silentnight.co.uk and mattressonline.co.uk product pages, October 2026.
Key benefits
- Leaves floor space free: At 90cm wide, the UK single leaves room for a desk and wardrobe, which means a child's bedroom can still have somewhere to play.
- Fits standard single frames: The 90 x 190cm size matches standard UK single frames, so the width suits most bunk, cabin and mid sleeper beds, although you should check depth limits separately.
- Firm support for one person: A firm pocket sprung surface gives back and front sleepers a stable base, which a growing teenager who sleeps on their back may appreciate.
- Pairs neatly in a guest room: Two UK singles side by side let a spare room take two friends who would rather not share a bed, and they can be pushed apart when needed.
- Suits a room that doubles as an office: In a study that sometimes hosts guests, a UK single sits against one wall and leaves the desk area clear most of the year.
This size suits you if...
You sleep alone and mostly on your back or front, you are furnishing a child's or teenager's room where floor space matters, or you need a narrow bed for a spare room, study or loft conversion.
Consider another size if...
You are an adult who spreads out, or a light side sleeper who needs more give. For extra width we'd recommend the UK small double instead; allow at least 2.4m x 2.8m.
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FAQ's
What are the dimensions of the Silentnight UltraGel 3000 Pocket Firm UK single?
The UK single measures 90 x 190cm, which is 3ft x 6ft 3in in imperial. That is the standard UK single size, so single sheets and a single duvet will fit.
Will the UltraGel 3000 Pocket Firm UK single fit a bunk bed or mid sleeper?
The 90 x 190cm size matches standard UK single frames, so the width should suit. Raised frames usually set a maximum mattress depth to keep the guard rail effective, so check the depth on Silentnight's listing against your frame manufacturer's guidance before buying.
How much room do I need for a UK single mattress like the UltraGel 3000?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That leaves space to walk around the bed and open drawers in a small bedroom.
UK single or UK small double UltraGel 3000 for one adult?
The UK small double is 30cm wider than the UK single and the same length. If you roll around or simply want more room, the extra width helps. We suggest at least 2.4m x 2.8m of floor space for the UK small double, against 2.1m x 2.8m for the UK single.
Is the UK single UltraGel 3000 Pocket Firm long enough for a tall teenager?
The UK single is 190cm long, the same as the UK small double and UK double. If your teenager is very tall, the UK king and UK super king are 10cm longer, although both are much wider and need a bigger room.