Silentnight UltraGel 1400 Pocket Mattress
Mattress
Silentnight UltraGel 1400 Pocket Mattress
Size
Firmness
Firm
Construction
Depth (cm)
29
Layers
2
Layer Details
- UltraGel™ layer. A gel infused comfort layer that Silentnight describes as smart and responsive, designed to adapt to your movements. In practice that means comforting, soothing cushioning at the surface rather than a deep sink.
- Mirapocket® springs. 1400 individual pocket springs that adjust to your body weight, giving ease of movement and zoned support. Silentnight states this zoning is scientifically proven to improve spinal alignment and posture.
Layer details from silentnight.co.uk product page, September 2026.
- A firm feel that suits growing sleepers: The firm support keeps the spine level for back and front sleepers, which makes this a sensible pick for teenagers moving up from a childhood mattress.
- Fits compact rooms with space to spare: At 90cm wide, it leaves room for a desk, wardrobe and floor space in a child's bedroom, or two beds plus a walkway where siblings share.
- 1400 pocket springs at single size: Each spring adjusts to your body weight individually, so a solo sleeper gets zoned support across the whole 90cm width rather than a one-feel-fits-all surface.
- Gel cushioning without the sink: The UltraGel layer adds responsive surface comfort, which means guests of different builds get a touch of give without the stuck-in feeling of soft foam.
- Check the depth on raised frames: At 29cm this is a deep mattress for a bunk, cabin or mid sleeper, so measure against the frame's guard rail height before buying.
- Cheap, easy bedding: Standard single sheets and a single duvet (135 x 200cm) fit, and both are the most widely stocked and affordable bedding of any UK size.
This size suits you if...
You're buying for a child's or teenager's room where the bed shares floor space with a desk and toy storage, you're kitting out a spare room or study that doubles as guest space, or you're a solo adult in a compact room who sleeps on your back or front and wants firm support rather than a plush sink.
Consider another size if...
You're an adult who wants more room to stretch out, or you find 90cm restrictive. We'd recommend the UK small double instead: it's 30cm wider than the UK single, the same length, and needs a room of at least 2.4m x 2.8m.
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Is the Silentnight UltraGel 1400 in a UK single suitable for a child?
Yes, with one caveat. The firm feel supports growing backs well and the 90 x 190cm footprint is the standard children's bed size in the UK. Very lightweight side sleepers may find it a little unforgiving at the shoulder, so it's better suited to children and teens who sleep mostly on their back or front.
Will the UK single UltraGel 1400 fit a bunk bed or mid sleeper?
The 90 x 190cm footprint matches standard bunk, cabin and mid sleeper frames. The concern is depth: at 29cm this is deeper than many raised frames allow, and a mattress that sits above the guard rail is a safety risk on a top bunk. Measure your frame's maximum mattress depth before ordering.
How much room does a UK single mattress need?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That leaves enough clearance to walk around the bed and open drawers or wardrobe doors. It's why the single works in box rooms, lofts with a narrow footprint under the slope, and spare rooms that also hold a desk.
Is a single big enough for an adult on this mattress?
For one adult, yes, provided you don't sprawl. At 90cm wide it's the standard solo size, and the firm feel with 1400 pocket springs supports back and front sleepers well. If you're used to a bigger bed, the UK single is 45cm narrower than the UK double, which is a noticeable change.
Where can I find the best price on the UK single UltraGel 1400?
Compare the retailers listed on this page. The prices shown here are updated as retailers change them, so it's worth checking back before you buy, since single sizes are often the ones discounted first in sale periods.