Ergoflex 5G Mattress
Mattress
Ergoflex 5G Mattress
Size
Firmness
Construction
Foam
Rolled
Memory Foam
Orthopaedic
Depth (cm)
23
Layers
5
Layer Details
Cover
Tencel outer cover - natural and breathable
Top Layer
Micro-fine inner protective cover
Layer 2
True high-density visco-elastic memory foam
Layer 3
Cool-Sleep™ airflow system
Layer 4
High resilience foam base
- Proper space for two: At 75cm each for two people sharing, both of you can settle into the 9cm memory foam layer without meeting in the middle.
- Quieter nights for mismatched schedules: Memory foam absorbs movement rather than transmitting it, so an early alarm on one side is far less likely to wake the other.
- Length for taller sleepers: The UK king is 10cm longer than the UK double, which stops feet hanging off the end for anyone approaching six foot.
- Cooling matters more when sharing: Two bodies mean more heat, so the Cool-Sleep airflow layer and TENCEL cover work harder here than they would on a solo bed.
- Fits a normal master bedroom: We suggest at least 2.7m x 2.9m, which most UK master bedrooms can manage without the squeeze a UK super king demands.
This size suits you if...
You share the bed every night and a double has started to feel cramped, one of you is close to six foot and wants length as much as width, or you keep different hours and want the low motion transfer of deep memory foam spread across a bed wide enough that neither of you notices the other leaving.
Consider another size if...
Your bedroom falls short of our suggested 2.7m x 2.9m minimum, or you mostly sleep alone. We'd recommend the Ergoflex 5G in a UK double instead, which needs at least 2.6m x 2.8m.
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 Ergoflex 5G UK king big enough for a couple?
Comfortably, for most. At 150 x 200cm you get 75cm each for two people sharing, noticeably more room than a double, and the slow-response memory foam keeps each sleeper settled in their own patch rather than rolling towards the middle. If one of you spreads out or a dog claims a corner most nights, the UK super king is the next step up.
Is the Ergoflex 5G UK king long enough for someone over six foot?
The UK king measures 5ft x 6ft 6in, and that extra length is often the real upgrade for taller sleepers. The UK king is 10cm longer than the UK double, so someone around six foot gains clearance for their feet without needing a wider bed or a bigger room.
What room size do I need for the Ergoflex 5G in a UK king?
We suggest at least 2.7m x 2.9m, which leaves room to walk round the bed and open drawers. Bear in mind a new build master can feel smaller than the floor plan suggests once wardrobes go in, so measure the usable space rather than the wall-to-wall figure before committing.
Will a UK king help if my partner gets up earlier than me?
It helps on two fronts. The Ergoflex 5G's dense memory foam absorbs movement rather than passing it across the bed, and the width of a UK king means the person leaving at 5am is doing so further away from you. Couples on mismatched schedules tend to feel the benefit of both.
Where can I buy the Ergoflex 5G in a UK king?
Compare the retailers listed on this page. The prices shown here are live and updated as retailers change them, so checking the table before you buy is the reliable way to see current availability and the best price for the UK king specifically.







