Last seen for £309 at Silentnight on 30th September 2026
Silentnight Comfort Miracoil Essentials Double Mattress
The Silentnight Comfort Miracoil Essentials is a firm mattress at the affordable end of Silentnight's range, available in five UK sizes from Single to Super King.
- Firm support with even weight spread
- Memory layer softens pressure points
- 60-night trial & 5-year guarantee
Save with the previous model
Some retailers still sell the earlier version of this mattress. These is where it costs less than the current model's best price.
More available sizes
Last seen for £239 at Silentnight on 30th September 2026
Last seen for £369 at Silentnight on 30th September 2026
Last seen for £459 at Silentnight on 30th September 2026
Last seen for £299 at Silentnight on 30th September 2026
Last seen for £309 at Silentnight on 30th September 2026
Mattress details
Mattress
Silentnight Comfort Miracoil Essentials Mattress
Size
Firmness
Firm
Construction
Latex
Depth (cm)
21
Layers
5
Layer Details
Cover
Luxury soft micro quilt cover
Top Layer
Miracoil zoned spring system
Key benefits
- A shared size that fits the room: We suggest at least 2.6m x 2.8m for a UK double, which most UK bedrooms manage while still leaving bedside tables on both sides.
- Zoned springs for two sleepers: The Miracoil zoned spring system distributes weight evenly, which means less rolling towards each other when you share every night.
- Firm support across the full width: The firm feel stays consistent edge to edge, so neither of you ends up on a softer patch as you spread across 135cm.
- A memory layer to soften the surface: A memory comfort layer sits above the springs, which means a little give at hips and shoulders without losing the firm base a couple chose it for.
- Easy to dress and move: Standard double bedding is stocked everywhere, and the slimmer 21cm build is lighter to manoeuvre up turning stairs than a deeper mattress would be.
This size suits you if...
You share the bed every night and want a firm mattress in the size that suits a typical UK bedroom, you're furnishing a first flat or second bedroom and need the bed to leave room for a wardrobe and drawers, or you sleep alone but like space to stretch out, perhaps with a dog or cat claiming a corner.
Consider another size if...
You and your partner both want more personal space than 67.5cm each for two people sharing allows. The UK double is 15cm narrower and 10cm shorter than the UK king, so we'd recommend the UK king instead if your room offers at least 2.7m x 2.9m.
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FAQ's
Is the Silentnight Comfort Miracoil Essentials UK double big enough for a couple?
Yes, for most couples. At 135 x 190cm it gives 67.5cm each for two people sharing, and the zoned Miracoil springs are designed to reduce rolling together. If either of you is tall or a restless sleeper, the UK king adds 15cm of width and 10cm of length, provided your room can take it.
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. That allows bedside tables on both sides and space to open wardrobe doors. In a smaller second bedroom the UK double still tends to fit, which is a large part of why it remains Britain's most common shared size.
Will the UK double Silentnight Comfort Miracoil Essentials get up narrow stairs?
At 135 x 190cm and a slimmer 21cm deep, it's easier to angle around a turning staircase in an older terrace or a tight new build landing than a deeper, wider mattress. It will still need two people to carry. If access is genuinely tight, measure the stairwell and any turns before ordering.
Is this mattress in a double good for a guest room?
It suits one well. A UK double accommodates visiting couples as well as solo guests, and the firm feel with a light memory layer is an agreeable middle ground for people whose preferences you don't know. The hypoallergenic, dust mite free build is also reassuring when different guests use the bed.
Should I choose the UK double or the UK small double for this mattress?
The UK double is 15cm wider than the UK small double, and both are the same length. For two people sharing regularly, that extra width matters on a firm mattress where you sink in less. Choose the UK small double only if your room is tight; we suggest at least 2.4m x 2.8m for that size.