Silentnight UltraGel 3000 Cool-To-Touch Boxtop Medium Soft Mattress
Mattress
Silentnight UltraGel 3000 Cool-To-Touch Boxtop Medium Soft Mattress
Size
Firmness
Medium Soft
Construction
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.
- A soft feel that suits lighter sleepers: Medium soft works best under lighter bodies, which means the people most likely to sleep on a UK single, teens and smaller adults, get the cushioning as intended.
- Fits where space is tight: At 90cm wide it leaves room for a desk, wardrobe and floor space in a child's room or a loft conversion with a narrow usable footprint.
- Cooling for one warm sleeper: The UltraGel surface feels cool from the moment you lie down, useful for a teenager's room that traps heat in summer.
- 3000 pocket springs in a one-person bed: Each Mirapocket spring compresses individually, so a solo sleeper gets support shaped to their hips and shoulders rather than a flat push back.
- Easy, cheap bedding: Single sheets and duvets are the most widely stocked of any size, handy if this is going in a guest room or a first flat.
This size suits you if...
You're buying for a teenager or smaller adult who sleeps on their side and runs warm at night, you're furnishing a spare room or study that doubles as guest space, or you're a solo sleeper in a compact bedroom where a wider bed would crowd out everything else. It also suits a first flat where the frame is provided and you only need the mattress.
Consider another size if...
You're an adult who wants space to spread out, or you find 90cm restrictive even sleeping alone. We'd recommend the UK small double instead, which is 30cm wider and the same length; allow at least 2.4m x 2.8m for it.
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Is the Silentnight UltraGel 3000 single a good mattress for a child or teenager?
It's a strong match. Medium soft mattresses suit lighter bodies, so a child or teen gets the cushioned feel working as designed rather than sinking too far. The cool-to-touch surface helps in small rooms that get stuffy. For a very young child, check the height works safely with their bed frame first.
Will the UltraGel 3000 in a UK single fit a bunk or mid sleeper frame?
The 90 x 190cm footprint matches standard UK bunk and mid sleeper frames. The caution is depth: this is a boxtop mattress, and raised frames usually specify a maximum mattress depth so the guard rail stays effective. Silentnight's boxtop design adds height, so check your frame's depth limit before buying.
What size room do I need for a UK single mattress?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That gives you room to walk alongside the bed and open drawers or a wardrobe. It's the most forgiving footprint of any adult mattress size, which is why it works in box rooms, loft conversions and shared children's bedrooms.
Is the UltraGel 3000 single a sensible choice for a guest room?
Yes, with one caveat. Two UK singles can fit where one larger bed dominates, and the medium soft feel is welcoming for occasional use. But heavier guests or front sleepers may find it too soft. If your visitors are mostly couples, a sibling size such as the UK double may serve the room better.
Should I buy the UltraGel 3000 in a single or a small double?
The UK single is 30cm narrower than the UK small double, and both are the same length. For a child's room or a bunk frame, the UK single is the practical choice. For a teenager who'll keep the mattress into adulthood, or an adult who likes room to sprawl, the UK small double is worth the extra width; allow at least 2.4m x 2.8m for it.