Silentnight 800 Mirapocket Mattress
Mattress
Silentnight 800 Mirapocket Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
26
Layers
2
Layer Details
- Eco Comfort Fibre. A comfort layer made from sustainable materials including repurposed plastic. It's highly breathable, which means air circulates freely through the mattress for a fresher, cooler feel through the night.
- Mirapocket Springs. 800 individual pocket springs, zoned to give targeted relief to your back, joints and hips. Because each spring moves independently, the mattress responds to your body shape and absorbs movement, so a restless partner is less likely to wake you.
Layer details from mattressonline.co.uk product page, September 2026.
- Springs that work for two: Each of the 800 pocket springs moves independently, which means your partner turning over at 67.5cm away is far less likely to wake you.
- Zoned support at close quarters: The springs are zoned to push back harder under hips, so two sleepers of different weights each get support suited to their own body.
- Breathable with two people aboard: The Eco Comfort Fibre layer lets air move through rather than trapping it, which matters more when two bodies are warming one mattress.
- A footprint most rooms can take: At 4ft 6in x 6ft 3in, it leaves space for wardrobes and drawers in the typical UK bedroom where a UK king would dominate.
- Easy to dress on a budget: Double sheets and duvets are stocked everywhere at every price, a quiet saving if you're furnishing a whole home at once.
This size suits you if...
You share the bed every night and want the classic couples' size in a room where a UK king would feel cramped, your bedroom measures at least 2.6m x 2.8m, or you're setting up a guest room that needs to sleep visiting couples properly rather than squeezing them onto something smaller.
Consider another size if...
Your room comfortably exceeds 2.7m x 2.9m and you both want more space. The UK king is 15cm wider and 10cm longer, and we'd recommend it instead; two sleepers feel that extra width every night.
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Is the Silentnight 800 Mirapocket double big enough for a couple?
For most couples, yes. The UK double gives 67.5cm each for two people sharing, and because the 800 pocket springs move independently, a restless partner disturbs you less than on a bonnell spring bed. If either of you is broad shouldered or sprawls, the UK king is 15cm wider and 10cm longer, where the room allows.
Will a UK double fit my room with bedside tables on both sides?
Usually. We suggest a minimum room of 2.6m x 2.8m for a UK double, and at 135cm wide the mattress leaves reasonable clearance either side in most bedrooms of that size or above. Measure your tables and check you still get walking room down each side before ordering.
Is the Silentnight 800 Mirapocket double a good guest room mattress?
It suits guest rooms well. The UK double sleeps visiting couples, the medium firm feel is a safe middle ground for guests you can't ask about firmness preferences, and the breathable fibre layer helps a room that isn't heated year round. Some owners found it firmer than expected, so lovers of soft beds may notice that.
Should I choose the small double instead to save space?
Only if you mostly sleep alone. The UK double is 15cm wider than the UK small double and the two are the same length, so the saving is modest, but couples feel that missing width every night. For a solo sleeper in a compact room, the UK small double works, and we suggest at least 2.4m x 2.8m for it.
Is the Silentnight 800 Mirapocket still available in a UK double?
Availability is limited. The model is listed as discontinued, so stock of the UK double may come and go, and you might need to contact the retailer directly to arrange an order. Compare the retailers listed on this page, as the prices and stock shown here are updated as retailers change them.