MattressNextDay Ortho Memory Foam Mattress
Mattress
MattressNextDay Ortho Memory Foam Mattress
Size
Firmness
Construction
Depth (cm)
19
Layers
3
Layer Details
- EcoFoam®. A deep base layer of sustainable EcoFoam®, made from 100% recycled and re-engineered foam, which means a sturdy foundation that encourages spinal alignment and posture control. It's the layer doing most of the supportive work.
- Reflex Foam. A firm Reflex Foam layer that moulds to your body shape, which means pressure relief targeted where you actually need it. It bridges the gap between the solid base and the softer surface.
- Memory Foam. A final cushioning layer of memory foam that adds a sumptuous softness at the surface. It takes the edge off the firm feel without undermining the support beneath.
Layer details from mattressnextday.co.uk product page, September 2026.
- 75cm each for two sharing: Two people get 75cm of width apiece, so you can shift position or prop yourself up without nudging your partner awake.
- Extra length for taller sleepers: At 200cm, the UK king is 10cm longer than the UK double, a real relief if either of you is approaching six foot.
- Firm support across the full width: The firm feel stays consistent edge to edge, so heavier and lighter partners each get proper support on their own side.
- Memory foam softens comings and goings: The memory foam top layer moulds to each sleeper individually, which takes the edge off movement when one of you gets up hours before the other.
- A recycled base at a budget price: The EcoFoam® base is made from 100% recycled foam, an unusual sustainability point in a budget king size.
This size suits you if...
You share the bed every night and a UK double has started to feel cramped, especially if one of you is close to six foot and wants that extra 10cm of length. It also suits couples on different schedules, where one partner leaves for work hours before the other and would rather slip out without a fuss.
Consider another size if...
Your bedroom can't manage our suggested minimum of 2.7m x 2.9m for a UK king. We'd recommend the UK double instead, which needs a slightly smaller 2.6m x 2.8m and still gives 67.5cm each for two sharing.
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What are the dimensions of the MattressNextDay Ortho Memory Foam Mattress in a UK king?
The UK king measures 150 x 200cm, or 5ft x 6ft 6in. That gives two people sharing 75cm of width each, and the 200cm length adds welcome breathing room for anyone tall. Standard UK king sheets fit, and the 19cm depth means most fitted sheets will tuck in without a struggle.
Is the UK king version of this mattress good for couples?
Yes, and arguably it's the size where this mattress makes most sense for two. You get 75cm each, so the firm surface supports each of you on your own side, and the memory foam top layer moulds around each sleeper. Lightweight side sleepers may still find the firm feel a little much, whatever the size.
What room size do I need for a UK king mattress?
We suggest at least 2.7m x 2.9m, with more feeling comfortable once wardrobes and drawers go in. New build master bedrooms can be tighter than they look on the plan, so measure the usable floor space with furniture in place before committing. If your room falls short, the UK double needs 2.6m x 2.8m.
Is the UK king long enough for a tall sleeper?
At 200cm, it's 10cm longer than the UK double, so anyone around six foot gains genuine clearance rather than sleeping with their feet at the very edge. If height is your main frustration with your current bed, the length is arguably a bigger upgrade than the width.
Should I get this mattress in a UK double or a UK king?
If you share every night, the UK king is usually the better buy. It's 15cm wider and 10cm longer than the UK double, and the UK double gives 67.5cm each for two sharing, so the UK king gives 7.5cm more each. Choose the UK double only if your room is under 2.7m x 2.9m, or you mostly sleep alone.