Silentnight Miracoil Ortho Mattress
Mattress
Silentnight Miracoil Ortho Mattress
Size
Firmness
Construction
Depth (cm)
24
Layers
2
Layer Details
- Eco Comfort Fibres. A comfort layer made with Silentnight's Eco Comfort fibres, partially made from recycled plastic including bottles. It is breathable, helps regulate temperature and reduces moisture build-up, which means you should feel less clammy overnight.
- Miracoil® springs. Silentnight's Miracoil® support system gives zoned support where your body needs it most, so heavier areas like your hips get firmer resistance. It also supports right to the edge of the bed and is designed to limit partner disturbance when one of you moves.
Layer details from silentnight.co.uk product page, September 2026.
- The classic shared size: At 135 x 190cm you get 67.5cm each for two people sharing, which most established couples find workable rather than generous.
- Edge support matters more at this width: Silentnight says the Miracoil system supports right to the edge, so on a shared double neither of you loses usable width to a soft perimeter.
- Fits typical UK bedrooms: We suggest a room of at least 2.6m x 2.8m, which leaves space for bedside tables on both sides in most master bedrooms.
- Less disturbance in a closer sleeping arrangement: The springs are designed to limit partner disturbance, useful at a width where you feel movement more than you would in a UK king.
- Easy to dress and easy to budget for: Standard double sheets and duvets are sold everywhere at every price, handy if you're furnishing a whole home at once.
This size suits you if...
You share the bed every night and want firm support in a size that leaves the rest of the room usable. It also suits a guest room that hosts visiting couples, where a double is the expected standard. And if you're kitting out a first flat or a whole house in one go, a firm double at this end of the market keeps money back for everything else.
Consider another size if...
You and your partner both like space, or one of you is a restless sleeper, because 67.5cm each can feel snug. The UK king is 15cm wider and 10cm longer; we'd recommend it if your room allows at least 2.7m x 2.9m.
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Is the Silentnight Miracoil Ortho double big enough for two adults?
It works for most couples, with 67.5cm each for two people sharing. Because the mattress is firm and supports right to the edge, you can use the full width without rolling toward the middle or off the side. Taller or broader couples, or anyone who sprawls, will be more comfortable in the UK king.
Will a UK double Miracoil Ortho fit in a small bedroom?
Usually, yes. The mattress is 135 x 190cm, and we suggest a room of at least 2.6m x 2.8m so you can walk round the bed and open drawers. Around 3m x 3m is the comfortable norm if you want bedside tables on both sides plus a wardrobe.
What are the dimensions of the Silentnight Miracoil Ortho in a UK double?
It measures 135 x 190cm, or 4ft 6in x 6ft 3in. Length is the same as the UK single and UK small double; the UK king and UK super king are both 10cm longer, which matters if you're around six foot or taller.
Should I get the Miracoil Ortho in a double or a king?
The UK double is 15cm narrower and 10cm shorter than the UK king. Choose the double if your room is closer to our 2.6m x 2.8m minimum, or if you're buying for a guest room. Sleep-disturbed couples gain more from the king, provided the room allows at least 2.7m x 2.9m.
Is the double Miracoil Ortho a good choice for a guest room?
It's a practical one. A double is what visiting couples expect, the firm feel suits a wide range of occasional guests, and double bedding is cheap and stocked everywhere. The zoned springs are a size-friendly bonus too, since guests sharing a 135cm width will feel each other's movement less.