Silentnight UltraGel 1000 pocket Single Mattress
The Silentnight UltraGel 1000 Pocket is a hybrid mattress that pairs a gel infused foam comfort layer with 1000 Mirapocket springs.
- Breathable gel foam runs cooler
- Minimises partner disturbance
- 60-night trial & 5-year guarantee
£427.53
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Silentnight UltraGel 1000 pocket Mattress
More available sizes
Mattress details
Mattress
Silentnight UltraGel 1000 pocket Mattress
Size
Firmness
Medium Firm
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Gel
Depth (cm)
28
Layers
2
Layer Details
UltraGel comfort layer
A gel infused foam layer that responds to your movements, which means you get contouring without the slow, sunken feel some foams have. Silentnight says it's 5x more breathable than standard memory foam, so it should run cooler through the night.
Mirapocket springs
1000 Mirapocket springs, each held in its own fabric pocket so they respond independently to your body. In practice that means zoned support, better spinal alignment and less motion transfer across the bed.
Layer details from silentnight.co.uk product page, September 2026.
Key benefits
- Fits where other sizes won't: At 3ft x 6ft 3in, this size slots into compact bedrooms and loft conversions, and we suggest allowing at least 2.1m x 2.8m of floor space.
- Cooler for warm sleepers: The UltraGel comfort layer, which Silentnight states is 5x more breathable than standard memory foam, means less trapped heat in a small, warm bedroom.
- Supportive for growing bodies: The medium firm feel gives children and teens a stable, spine-friendly surface rather than something they sink into.
- Springs that work at any body weight: The 1000 Mirapocket springs respond individually to pressure, which means a lighter child gets contouring in the right places, and so does a heavier adult guest.
- Cheap, easy bedding: Standard single sheets and a single duvet fit, and both are the most widely stocked bedding of any UK size.
This size suits you if...
You're kitting out a child's or teenager's room and want something that will still support them as they grow, you sleep alone in a compact bedroom or first flat where a wider bed would crowd the space, or you need a dependable mattress for a spare room that doubles as an office or hosts occasional guests.
Consider another size if...
You're an adult who sleeps alone but wants room to stretch out, or you sometimes share the bed. We'd recommend the UK small double instead: it's 30cm wider, the same length, and we suggest a room of at least 2.4m x 2.8m for it.
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FAQ's
What size is the Silentnight UltraGel 1000 in a UK single?
The UK single measures 90 x 190cm, which is 3ft x 6ft 3in. It's the standard one-person size in the UK, and we suggest allowing a room of at least 2.1m x 2.8m so you have space to move around the bed and open drawers or wardrobe doors.
Is the Silentnight UltraGel 1000 single suitable for a bunk or mid sleeper frame?
The 90 x 190cm footprint matches standard UK bunk and mid sleeper frames, so the width and length should be fine. The mattress is 28cm deep, though, which is on the taller side for a raised frame, so check your frame's maximum mattress depth and guardrail height before buying.
Is a UK single Silentnight UltraGel 1000 big enough for an adult?
For one adult, yes, though at 90cm wide it's a snug fit if you like to sprawl. The medium firm feel and pocket springs support adult weight comfortably, which makes this size a solid choice for guest rooms and student lets. For every night adult use, some people prefer the extra width of the UK small double.
Should I buy the UK single or the UK small double of the Silentnight UltraGel 1000?
It mostly comes down to floor space. The UK single is 30cm narrower than the UK small double, and both are the same length, so sizing up buys shoulder room rather than legroom. We suggest at least 2.4m x 2.8m for the UK small double; if your room is tighter than that, stick with the single.
Will two UK singles of this mattress work in a shared children's room?
Often, yes. Each mattress needs a 90 x 190cm footprint, and we'd suggest leaving a walkway between the two beds so neither child has to climb over furniture. Because each single has its own 1000 Mirapocket springs, one restless sleeper won't disturb the other, which helps when bedtimes differ.