Emma Performance 26 Mattress
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.
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.
- Space to sleep apart when you need to: At 75cm each for two people sharing, you can shift position or prop pillows without landing in your partner's half, useful during pregnancy or recovery from surgery.
- Less disturbance on different schedules: Zoned pocket springs reduce motion transfer, and the wider surface means a 5am departure happens further away from the person still asleep.
- Extra length for taller sleepers: The UK king runs to 200cm, so a partner around six foot gets their feet on the mattress rather than off the end.
- Cooler sharing for two: Two bodies raise the temperature under one duvet, and the AirGrid™ Tech layer's airflow matters more in a shared UK king than it would solo.
- Stable edges across a wider bed: The foam frame around the perimeter keeps the sides supportive, so neither of you rolls towards the middle of the 150cm width.
This size suits you if...
You share the bed every night and have outgrown the elbow room a UK double gives, one of you leaves for work hours before the other and you want movement kept to a minimum, or a partner approaching six foot keeps finding their feet hanging off a standard-length mattress.
Consider another size if...
Your bedroom is smaller than the 2.7m x 2.9m we suggest allowing for a UK king, or you mostly sleep alone. We'd recommend the UK double of the Emma Performance 26 instead, which keeps the same feel in a smaller footprint.
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 in a UK king big enough for two adults?
Comfortably, for most couples. The UK king measures 150 x 200cm, which gives 75cm each for two people sharing. Combined with the zoned pocket springs that reduce motion transfer, that width means a restless partner, or a dog that treats the bed as its own, is less likely to wake you.
Will a UK king Emma Performance 26 fit in my bedroom?
We suggest allowing at least 2.7m x 2.9m for a UK king, with 3.2m x 3.2m feeling comfortable. New build master bedrooms can be tighter than they first appear once fitted wardrobes go in, so measure the clear floor space, then check you can still open doors and walk around both sides.
Is the UK king Emma Performance 26 long enough for someone over six foot?
Usually, yes. The UK king is 200cm long, or 5ft x 6ft 6in overall, so a sleeper a little over six foot still has clearance before their feet reach the edge. Anyone much taller than that should lie diagonally in store on a king-length bed first, since no standard UK size goes longer.
Should we choose the Emma Performance 26 in a UK king or a UK double?
If you share every night, the UK king is 15cm wider than the UK double, and you feel that difference each time one of you turns over. The mattress itself is identical in feel at both widths, so the choice comes down to your room size and how much personal space you want.
Would a UK super king suit us better than the UK king?
The UK king is 30cm narrower than the UK super king, so if your room is generous and you both spread out, sizing up is tempting. That said, a super king demands noticeably more floor space and pricier bedding. For most couples upgrading from a UK double, the UK king is the sensible step.