Ergoflex 5G Double Mattress
The Ergoflex 5G is an all-foam memory foam mattress with a 23cm profile, built around a 9cm layer of HD visco-elastic memory foam, which means it moulds closely to your shape and eases pressure on hips and shoulders.
- Deep, cradling feel for side sleepers
- Airflow layer moves heat away
- 30-night trial & 10-year guarantee
£528
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Ergoflex 5G Mattress
More available sizes
Mattress details
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
Key benefits
- A footprint most bedrooms can take: At 135 x 190cm it leaves walking space where a UK king would push against wardrobes and doors; we suggest a room of at least 2.6m x 2.8m.
- Room for bedside tables on both sides: In a typical UK double bedroom, this width usually still allows a table and lamp each, which matters more than a few extra centimetres of mattress.
- 67.5cm each for two sharing: That's your personal strip of the 9cm memory foam layer, which moulds to your shape rather than transmitting your partner's movement across the bed.
- Motion isolation where it counts: Memory foam absorbs movement, so on a shared double one of you turning over is far less likely to wake the other.
- Bedding is cheap and everywhere: Double sheets and a 200 x 200cm double duvet are stocked at every price point, handy if you're furnishing a whole home at once.
This size suits you if...
You share the bed every night and your bedroom sits around the typical UK size, where a bigger bed would dominate the floor. It also suits you if you're setting up a first flat and want the widest choice of bedding and bases, or you sleep alone but like space to stretch out, perhaps with a dog or cat claiming a corner.
Consider another size if...
You and your partner both like to sprawl, or one of you is broad shouldered, as 67.5cm each can feel snug. We'd recommend the UK king instead, which is 15cm wider and 10cm longer; allow at least 2.7m x 2.9m for it.
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FAQ's
Is the Ergoflex 5G double big enough for two adults?
For most couples, yes. Two people sharing get 67.5cm of width each, and the deep memory foam layer isolates movement well, so a restless partner is less disruptive than on a springier bed. If either of you is tall or you both spread out in the night, the UK king gives 15cm more width and 10cm more length.
What room size do I need for the Ergoflex 5G in a UK double?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That allows the mattress plus space to walk round, open drawers and, in most layouts, fit bedside tables on both sides. Our figures are guidance rather than the manufacturer's, so measure your own room before deciding.
Will the Ergoflex 5G double fit up narrow stairs?
As an all-foam mattress, it's more forgiving on turning stairs in older terraces or a tight new build landing than a rigid sprung mattress would be, since foam flexes around corners. At 135cm wide it's also easier to manoeuvre than a UK king. Check your tightest turn against the 135 x 190cm dimensions before ordering.
Should I get the Ergoflex 5G in a double or a king?
Choose the UK double if your bedroom is typical of UK homes and you want floor space left over; choose the UK king, which is 15cm wider and 10cm longer, if you have at least 2.7m x 2.9m to spare and prioritise sleeping space. Sharing with a duvet-hogger tips the balance towards the UK king.
Is the double a good size for a guest room?
It's the safest choice. A UK double accommodates visiting couples where a UK single can't, and at 4ft 6in x 6ft 3in it fits alongside a wardrobe and drawers in most spare rooms. The memory foam's pressure relief also suits guests of different builds and sleeping positions without you needing to know their preferences.