Silentnight Comfort Gel Memory Foam Mattress
Mattress
Silentnight Comfort Gel Memory Foam Mattress
Size
Firmness
Construction
Depth (cm)
15
Layers
3
Layer Details
- Soft Touch Quilted Cover. A quilted fabric finish that gives a smooth, breathable sleep surface. It's the first thing you'll feel, and the quilting adds a little softness over the firm foam beneath.
- Cool Gel Memory Foam. This layer provides pressure relief and support, cradling your shoulders and hips as you settle in. The gel infusion regulates body temperature better than standard memory foam, which means less of the overheating foam is known for.
- Supportive Miratex® Foam. Miratex® foam conforms to the shape of your body as you sleep. It provides edge to edge support with no roll together, so you get the full sleeping surface rather than drifting toward the middle.
Layer details from mattressnextday.co.uk product page, September 2026.
- Safe for raised frames: The 15cm depth stays below the guard rails on most bunks and cabin beds, which means a child isn't perched above the safety barrier.
- Leaves the floor free: At 90cm wide, this size leaves room for a desk, wardrobe and toy storage in a child's bedroom rather than swallowing the whole floor.
- Edge to edge support: The Miratex® base supports right to the sides, so all 90cm of width is usable, which matters more on a single than any other size.
- Cooler for growing sleepers: The gel-infused foam regulates temperature better than standard memory foam, useful in small rooms and loft spaces that warm up quickly.
- Works in tight guest setups: Two UK singles plus a walkway fit where one bigger bed won't, handy for a spare room that hosts visiting family.
- Light enough to manage: A slim all-foam single is easier to rotate head to toe, and easier to get up a narrow staircase to a loft or student room.
This size suits you if...
You're buying for a child or teenager, especially on a bunk, cabin or mid sleeper where the 15cm depth keeps the guard rail doing its job. Or you're kitting out a spare room, student room or first flat where the frame is provided and floor space is tight, and you sleep alone. Allow at least 2.1m x 2.8m of floor space and the UK single fits almost anywhere.
Consider another size if...
You're an adult who spreads out in the night, or you sometimes share the bed. The firm feel carries across sizes, but 90cm of width is snug for a restless sleeper, so we'd recommend the UK double instead.
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Is the Silentnight Comfort Gel suitable for a bunk bed in a UK single?
Yes, and it's one of this mattress's stronger uses. At 15cm deep it sits low within the frame, so the guard rail on a bunk or mid sleeper keeps a proper margin above the sleeping surface. Do check your frame's maximum mattress depth before buying, but 15cm falls within most manufacturers' limits.
What room size 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 leaves room to walk around the bed and open drawers or a wardrobe. In a child's room it also leaves space for a desk and storage, which is often the reason for choosing this size in the first place.
Is the UK single Silentnight Comfort Gel big enough for an adult?
For one adult who sleeps fairly still, yes: at 90 x 190cm it's the standard UK one-person size, and the edge to edge support means you can use the full width without rolling toward the middle. Taller adults should note the 190cm length, and restless sleepers may prefer the extra width of the UK double.
Can I fit two Silentnight Comfort Gel singles in one guest room?
Often, yes. Two UK singles side by side with a walkway between them suit a guest room that hosts friends or siblings who'd rather not share, and each mattress is only 90cm wide. Measure your room against two beds plus access space, and remember each one needs its own single bedding.
Is the UK single the same length as the double in this mattress?
Yes. The UK single and the UK double are both 190cm long; the UK double is 45cm wider. So sizing up buys width for a restless sleeper or an occasional second person, but a tall sleeper gains nothing in legroom. For extra length you'd need the UK king, which is 10cm longer than the UK single.