Last seen for £934.15 at Mattress Man on 1st October 2026
Silentnight UltraGel 3000 Cool-To-Touch Boxtop Medium Soft Small Double Mattress
The Silentnight UltraGel 3000 is a hybrid mattress with a medium soft feel, pairing 3000 Mirapocket springs with an UltraGel cool-to-touch surface.
- Cool-touch surface for hot sleepers
- Minimises partner disturbance
- Medium-soft feel for side sleepers
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 £934.15 at Mattress Man on 1st October 2026
Last seen for £1,129.65 at Mattress Man on 10th November 2026
Last seen for £1,364.25 at Mattress Man on 11th October 2026
Last seen for £934.15 at Mattress Man on 10th November 2026
Last seen for £751.50 at Mattress Man on 1st October 2026
Mattress details
Mattress
Silentnight UltraGel 3000 Cool-To-Touch Boxtop Medium Soft Mattress
Size
Firmness
Medium Soft
Construction
Pocket Spring
Hybrid
Gel
Depth (cm)
Layers
2
Layer Details
UltraGel™ cool-to-touch layer
Cooling technology woven directly into the surface fabric, so the mattress feels cool from the moment you lie down. Silentnight claims five times greater breathability than standard memory foam, which means less of that trapped, clammy heat foam is known for.
Mirapocket® springs
A base of 3000 Mirapocket springs, each one pocketed so it compresses individually under your weight. You feel targeted support at your hips and shoulders rather than a uniform push back.
Layer details from mattressman.co.uk product page, September 2026.
Key benefits
- Real space for one: The UK small double is 30cm wider than the UK single, so a lone sleeper can properly spread out on that cushioned medium soft surface.
- Fits rooms a double cannot: At 15cm narrower than the UK double, it slots into box rooms, loft conversions and studio flats where every centimetre of walkway matters.
- Cooling in a smaller footprint: The UltraGel cool-to-touch surface, which Silentnight says offers five times greater breathability than standard memory foam, works the same in this compact size.
- 3000 springs under a solo sleeper: With 3000 Mirapocket springs, each compressing individually, one person on 120cm of width gets shape-following support wherever they settle rather than a fixed sweet spot.
- A sensible guest room choice: Couples can share it for the odd night, and the gentle medium soft feel is forgiving for visitors whose preferences you cannot predict.
This size suits you if...
You sleep alone and have outgrown a UK single but your room cannot spare the width of a full double, you're furnishing a guest room or holiday let where couples stay occasionally rather than nightly, or you're downsizing and need the bed to fit the new room rather than the old one. Lighter side sleepers get the most from this medium soft feel.
Consider another size if...
You share the bed every night, because 120cm across two adults leaves little room and the soft surface encourages sinking towards the middle. We'd recommend the UK double instead, allowing at least 2.6m x 2.8m of floor space.
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FAQ's
Is the small double UltraGel 3000 big enough for two adults?
For occasional nights, yes. Across the 120cm width the 3000 Mirapocket springs compress individually, so one person turning over is less likely to wake the other. For nightly sharing, though, it is a squeeze on a medium soft surface, and we'd point couples to the UK double, which is 15cm wider.
What room size do I need for a small double UltraGel 3000?
We suggest allowing at least 2.4m x 2.8m. The mattress itself measures 120 x 190cm, or 4ft x 6ft 3in, and that room guidance leaves enough space to open the door, walk down one side and get bedding on without a wrestle. In a loft conversion, check standing height beside the bed too.
How much bigger is the UK small double than the UK single?
The UK small double is 30cm wider than the UK single, and the two are the same length at 190cm. That extra width is the whole point: a teenager or solo adult who has outgrown a UK single gains proper rolling room without the footprint of a UK double.
Should a solo hot sleeper size up beyond the small double?
Only if the room allows it. The UltraGel cool-to-touch layer feels the same at every size, so you are not buying better cooling by going bigger. The UK king is 30cm wider and 10cm longer, and we suggest at least 2.7m x 2.9m for it, which rules out most compact bedrooms.
Where can I buy the UltraGel 3000 in a small double?
Compare the retailers listed on this page. The prices shown here are live and updated as retailers change them, so what you see reflects today's market rather than a printed figure. Stock in the UK small double can shift, so it's worth checking back if your preferred retailer isn't showing it.