Silentnight Miracoil Memory Cushion Top Mattress
Mattress
Silentnight Miracoil Memory Cushion Top Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
24
Layers
3
Layer Details
- Cushion Top. A deep-filled cushion top stuffed with extra soft fillings, which means a gentler first impression when you lie down. It softens the surface without changing the firm support beneath.
- Eco Comfort Layer. Silentnight's Eco Comfort layer uses fibres partially made from recycled plastic, including bottles. It's breathable and helps regulate temperature and reduce moisture build-up, so you should feel a little less clammy on warm nights.
- Miracoil Spring System. Silentnight's exclusive Miracoil spring system provides zoned support, which means firmer reinforcement where your body carries more weight. It also supports you right to the edge of the mattress, so you can use the full sleep surface without feeling you'll fall off.
Layer details from silentnight.co.uk product page, September 2026.
- Edge support that matters at this width: At 67.5cm each for two people sharing, the Miracoil system's support right to the edge means you can actually use all of your half.
- A footprint most bedrooms can take: At 4ft 6in x 6ft 3in, it fits rooms where a UK king would crowd out wardrobes and drawers, and usually leaves space for bedside tables on both sides.
- Firm support for two different sleepers: The zoned springs firm up where each body carries more weight, which means a heavier and lighter partner both get proper support on the same surface.
- Softer landing, no sink-in wallow: The deep-filled cushion top takes the edge off the firm base, which two people sharing feel as pressure relief without rolling towards each other.
- Easy to dress and to buy for: Standard double sheets and a 200 x 200cm double duvet fit, all stocked everywhere, which keeps setting up a first flat or guest room simple.
This size suits you if...
You share the bed every night and your room sits near our suggested 2.6m x 2.8m minimum, so a bigger bed would leave no walking space. Or you sleep alone, perhaps with a dog or cat claiming a corner, and want room to spread out on a firm surface. It also makes a practical guest room bed for visiting couples, since the firm, supportive feel copes with different sleepers.
Consider another size if...
You and your partner both want real space, or either of you is tall, since 67.5cm each and 190cm of length can feel snug. We'd recommend the UK king instead: 15cm wider, 10cm longer, allowing at least 2.7m x 2.9m.
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Is the Silentnight Miracoil Memory Cushion Top in a UK double big enough for a couple?
For most couples, yes. You get 67.5cm each for two people sharing, and because the Miracoil springs support you right to the edge, that width works harder than it sounds. If either of you is broad-shouldered or a restless sleeper, sizing up to the UK king adds 15cm of width and 10cm of length.
What room size do I need for this mattress in a UK double?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. The mattress itself measures 135 x 190cm, so in a typical UK bedroom that leaves room to open a wardrobe and, in most layouts, fit bedside tables on both sides. Measure your walking space before you decide.
Should I buy this Silentnight in a UK double or a UK king?
Choose the UK double if your room is close to our 2.6m x 2.8m suggested minimum, or if you're furnishing a guest room or first flat where floor space matters. The UK king is 15cm wider and 10cm longer, and needs a room of at least 2.7m x 2.9m, so it suits larger main bedrooms and taller sleepers.
Will the UK double fit up narrow stairs in a terraced house?
The mattress measures 4ft 6in x 6ft 3in, and as a sprung hybrid it won't bend the way an all-foam mattress might, so measure any turning stairs or tight new build landings before ordering. Silentnight doesn't publish handling guidance for stairwells, so check with the retailer you buy from about delivery access.
Is a UK double a good guest room choice for this mattress?
It's a strong fit. The UK double handles visiting couples as well as solo guests, and the firm, zoned support with a softer cushion top is a safe middle ground for people whose preferences you don't know. It also leaves space in a second bedroom for a wardrobe and drawers, which a UK king often wouldn't.