Silentnight 7 Zone Memory Foam Mattress
Mattress
Silentnight 7 Zone Memory Foam Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
20
Layers
3
Layer Details
- Soft Touch Quilted Cover. A quilted fabric finish that gives a smooth, breathable sleep surface. It adds a touch of softness before you reach the foam beneath.
- Memory Foam. This comfort layer reacts to your body's contours, which means it cushions key pressure points like hips and shoulders. You get a personalised sleeping surface that adapts as you move.
- 7-Zone Support System. The base layer delivers enhanced support to different areas of the body. In practice, that helps keep your natural alignment from head to toe.
Layer details from mattressnextday.co.uk product page, September 2026.
- Fits raised frames: At 20cm deep, it sits low enough for most bunk, cabin and mid sleeper frames, though you should check the frame's maximum mattress depth against the safety rail.
- Room to grow around it: A 90cm wide bed leaves floor free for a desk, wardrobe and toy storage, which matters in a child's room where the bed competes for space.
- Supportive for growing sleepers: The 7-zone base gives different areas of the body their own level of support, helping keep a child's or teenager's spine in natural alignment.
- Practical for guest and spare rooms: In a spare room that doubles as an office, a UK single keeps the working half of the room usable while still offering guests memory foam comfort.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm duvet fit, and they're the cheapest and most widely stocked bedding of any UK size.
This size suits you if...
You're buying for a child or teenager moving up from a cot or toddler bed, you sleep alone in a compact room or student flat where a wider bed would crowd the space, or you're furnishing a spare room that needs a guest bed without giving up the whole floor. The medium firm feel suits back sleepers here, though lightweight side sleepers may find it slightly solid.
Consider another size if...
You're an adult who finds 90cm of width restrictive, or you tend to spread out in the night. The UK double is 45cm wider and the same length, and we suggest at least 2.6m x 2.8m of floor space for it.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
Will the Silentnight 7 Zone UK single fit a bunk bed or mid sleeper?
In most cases, yes. The UK single measures 90 x 190cm, the standard footprint for bunk, cabin and mid sleeper frames, and its 20cm depth sits within the limit most raised frames allow. Do check your frame's stated maximum mattress depth, because the safety rail needs to sit well above the sleep surface.
Is the Silentnight 7 Zone UK single suitable for a child?
It works well for older children and teenagers. The 7-zone base supports growing bodies and the memory foam cushions hips and shoulders. One caution: the feel is medium firm, and the retailer listing describes it as firm, so a very lightweight child may find it a little unyielding at first. It softens slightly as the foam warms.
What room size do I need for the Silentnight 7 Zone in a UK single?
We suggest allowing at least 2.1m x 2.8m of floor space. That gives you a walkway beside the bed and room for a wardrobe or desk. At 90cm wide, this size also suits awkward spaces: under a loft slope, in a box room, or two singles side by side in a shared children's room with a gap between.
What bedding fits the Silentnight 7 Zone single mattress?
Standard UK single fitted sheets, made for a 90 x 190cm mattress, fit this one without adjustment, and its 20cm depth is shallow enough for regular-depth sheets rather than extra-deep ones. Pair it with a single duvet at 135 x 200cm. Single bedding is the cheapest and most widely available of any UK size.
Is the Silentnight 7 Zone single big enough for an adult?
For most solo adults, yes, provided you're comfortable with 90cm of width. It's the same 190cm length as the UK double, so height isn't the issue; width is. If you're broad shouldered or move around a lot in the night, the UK double gives you 45cm more width, and we suggest at least 2.6m x 2.8m of floor space for it.