Emma Performance 26 Mattress
Mattress
Emma Performance 26 Mattress
Size
Firmness
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Depth (cm)
26
Layers
7
Layer Details
- Cover. A soft knit cover that feels cool to the touch. Breathable micro-dots move air outwards, which means the sleep surface stays fresher through the night.
- Emma AirGrid™ Tech layer. A flexible grid engineered to adapt to your body, giving instant pressure relief. It also boosts airflow, so it cushions you without holding heat the way solid foam can.
- MemoryAdapt layer. Memory foam that responds to your body for immediate cushioning. It contours to your curves and relieves pressure, giving that cosy, cradled feeling.
- SupportBase layer. This layer eases strain on sensitive pressure points and creates a smooth transition down to the core. The result is balanced firmness that supports you without letting you sink.
- Zoned pocket springs. Springs zoned to give responsive support where you need it, while reducing motion transfer so a partner's movement is less likely to disturb you. A strong foam frame around the edges keeps the perimeter stable.
- SupportBase layer. A second SupportBase layer grounds the spring core and keeps the structure stable. It gives the mattress a solid, lasting foundation.
- Bottom cover. A base cover that keeps the mattress in position on your bed frame, all night every night.
Layer details from emma-sleep.co.uk product page, September 2026.
- The classic shared size: At 135 x 190cm, the UK double is the long standing standard for two, which means it fits rooms where a UK king would crowd everything else.
- Motion transfer matters more at this width: With 67.5cm each for two people sharing, you sleep closer together, so the zoned pocket springs reducing partner disturbance count for more here than in wider sizes.
- Edge support you will actually use: On a shared UK double, both of you sleep nearer the sides, and the foam frame around the perimeter keeps those edges stable rather than saggy.
- Cooling in close quarters: Two bodies in a narrower bed generate more shared heat, and the AirGrid™ Tech layer's airflow helps keep that from building up overnight.
- Room to keep bedside tables: We suggest allowing at least 2.6m x 2.8m, which in most bedrooms still leaves space for a bedside table on each side.
This size suits you if...
You share the bed every night and want the traditional couples' size, your bedroom is average for a UK home and a UK king would dominate it, or you sleep alone and want space to spread out, perhaps with a dog or cat claiming their usual corner. It also suits a guest room that regularly hosts visiting couples.
Consider another size if...
You and your partner both like room to sprawl, or one of you is a restless sleeper. The UK king adds 15cm of width and 10cm of length, and we'd recommend it instead if your room can take 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.
Is the Emma Performance 26 double big enough for two adults?
It works for most couples, with the caveat that 67.5cm each for two people sharing is cosier than a UK king. The mattress helps at this width: zoned pocket springs limit motion transfer and the foam edge frame keeps the sides usable, so the space you have works harder. Larger or restless couples may prefer sizing up.
What are the dimensions of the Emma Performance 26 in a UK double?
The UK double measures 135 x 190cm, or 4ft 6in x 6ft 3in. That makes it 15cm wider than the UK small double and the same length, while the UK king is 15cm wider and 10cm longer than the UK double. Standard UK double sheets and a 200 x 200cm double duvet fit it.
What room size do I need for the Emma Performance 26 double?
We suggest allowing at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That minimum leaves enough clearance to walk round the bed and open wardrobe doors, and in most rooms it still allows bedside tables on both sides, which is where the double beats a UK king in a typical UK bedroom.
Should a couple choose the double or the king in this mattress?
It mostly comes down to your room. The UK king is 15cm wider and 10cm longer than the UK double, which is noticeable every night, but it needs more floor space. If your bedroom is on the smaller side, or you want space left for drawers and a wardrobe, the UK double is the more practical pick.
Is the Emma Performance 26 double easy to get upstairs?
At 135cm wide it is more manageable on a turning staircase or a tight new build landing than the wider sizes, though it is still a substantial 26cm deep hybrid, so plan for two people to carry it. Measure any awkward turns before delivery day rather than after.