Silentnight UltraGel Miracoil Pillowtop Mattress
Mattress
Silentnight UltraGel Miracoil Pillowtop Mattress
Size
Firmness
Construction
Depth (cm)
29
Layers
2
Layer Details
- UltraGel™ comfort layer. A gel infused layer that sits at the top and responds to your movements, which means cushioning that adapts as you shift position. Silentnight describes it as offering supreme comfort with strong pressure relief, so it should ease strain around hips and shoulders.
- Miracoil® springs. This spring system runs from head to toe rather than side to side, which is designed to keep your spine aligned through the night. It also helps prevent partner disturbance, so movement on one side of the bed transfers less to the other.
Layer details from silentnight.co.uk product page, September 2026.
- Leaves floor space free: At 3ft x 6ft 3in, the UK single leaves room for a desk, wardrobe or toy storage in a child's bedroom.
- Proper support for growing bodies: The Miracoil springs run head to toe, which means a teenager gets a steady, supportive base with a gel layer cushioning hips and shoulders.
- Fits a narrow loft footprint: In a loft conversion, a 90cm wide bed can tuck in along the lower wall under the slope and keep the standing-height floor clear.
- A sensible pair for the spare room: Two UK singles in a guest room let you host two friends or two children separately, and each gets the same medium/firm feel.
- Firm enough for a bed that gets sat on: The medium/firm feel keeps its shape when a child sits on the edge to read, or when a spare room bed doubles as seating.
This size suits you if...
You're buying for a child or teenager whose room has to fit a desk and storage as well as a bed, or you're furnishing a guest room or loft conversion where one sleeper needs a supportive mattress on a compact footprint.
Consider another size if...
You're an adult who likes room to spread out, or someone sometimes shares your bed. The UK small double would suit you better, and we suggest at least 2.4m x 2.8m for it.
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Can I put a Silentnight UltraGel Miracoil Pillowtop single on a bunk bed?
Possibly, but check first. The mattress is 29cm deep, which is deeper than many bunk and mid sleeper frames are designed for. Look up the maximum mattress depth for your frame, because a mattress sitting too high can reduce how much the safety rail protects the top sleeper.
What room size do I need for the UltraGel Miracoil Pillowtop in a UK single?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That leaves room to walk past the bed and open drawers or a wardrobe, which matters in a child's bedroom where the bed is competing with storage and a desk.
Is a single Silentnight UltraGel Miracoil Pillowtop good for a teenager?
For most teenagers, yes. The springs give firm, even support and the gel layer eases pressure at the hips and shoulders. A lighter teenager who sleeps mostly on their side may find the medium/firm feel slightly too solid, though, so ask how they usually sleep before you buy.
Should one adult get the UltraGel Miracoil in a UK single or a UK small double?
The UK single is 30cm narrower than the UK small double, and the two are the same length. If you turn over a lot or like to stretch out, the UK small double gives you that extra width. We suggest at least 2.4m x 2.8m of floor space for a UK small double.
Is the UK single UltraGel Miracoil long enough for a tall adult?
The UK single is 190cm long. If your feet already reach the end of a standard bed, the UK king is 10cm longer, although it is also much wider and we suggest at least 2.7m x 2.9m for it. The UK small double and UK double are the same length as the UK single.