Ikea Akrehamn Foam King Size Mattress
The Ikea Akrehamn is a 20cm deep all-foam mattress with a medium firm feel, available in UK Single, Double and King sizes.
- Zoned support adapts to your shape
- Suits most back & front sleepers
- 365-night trial & 10-year guarantee
£399
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Ikea Akrehamn Foam Mattress
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Mattress details
Mattress
Ikea Akrehamn Foam Mattress
Size
Firmness
Medium Firm
Construction
Foam
Memory Foam
Depth (cm)
20
Layers
3
Layer Details
Comfort zones
Zoned areas designed to adjust the support across different parts of your body, which means your heavier areas can sink in slightly more than lighter ones. This helps keep your spine in a more natural position as you sleep.
Standard foam
Polyurethane foam at 33 kg/m3 forms the supportive core of the mattress. This density gives the mattress its medium firm feel and its overall structure.
Memory foam
A layer of memory foam that softens with your body heat and moulds to your shape. It adds a touch of pressure relief without making the mattress feel soft overall.
Layer details from ikea.com product page, September 2026.
Key benefits
- 75cm each for couples: Two people sharing get 75cm of width apiece, enough that one of you shifting position doesn't automatically wake the other.
- An affordable route to a bigger bed: Sizing up is usually where budgets stall, so a low-priced foam mattress like the Akrehamn makes the UK king upgrade more reachable.
- Extra length for taller sleepers: At 200cm, the UK king is 10cm longer than the UK double, a real difference if one of you is approaching six foot.
- Zoned support across a wider surface: The comfort zones let heavier areas sink in slightly more, so each of you gets support suited to your own shape rather than a compromise.
- Manageable at 20cm deep: A 20cm all-foam UK king is lighter to rotate and make up than a deep sprung equivalent, useful in a room without much clearance.
This size suits you if...
You share the bed every night and have started to feel hemmed in on a double, perhaps because you keep different hours and one of you climbs in or out while the other sleeps. Or one of you is tall enough that a 190cm mattress leaves feet at the edge, and the UK king's 200cm length solves that. It also suits couples upgrading on a tight budget.
Consider another size if...
Your bedroom falls short of the 2.7m x 2.9m we suggest for a UK king, especially once wardrobes are in. We'd recommend the UK double instead, which gives 67.5cm each for two sharing and needs at least 2.6m x 2.8m.
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FAQ's
Is the Ikea Akrehamn UK king big enough for a couple?
Yes, comfortably for most. At 150 x 200cm you each get 75cm of width, noticeably more personal space than a double offers. If a dog routinely joins you and takes more than its share, or you both sprawl, the UK super king gives 90cm each, though it needs a room of at least 3m x 2.9m.
Will a king size Akrehamn fit in my bedroom?
We suggest a minimum of 2.7m x 2.9m for a UK king, which leaves space to walk round and open drawers. New build master bedrooms often look generous empty but tighten up once fitted wardrobes go in, so measure the usable floor rather than the room. If it's marginal, the UK double needs at least 2.6m x 2.8m.
Is the Akrehamn UK king worth it over the double?
If you share the bed, usually yes. The UK king is 15cm wider and 10cm longer than the UK double, which means more space each and less chance of disturbing a partner on a different schedule. Because the Akrehamn sits at the budget end, the step up costs less here than with most mattresses. Solo sleepers can happily stay with the double.
How long is the Akrehamn in a UK king?
It's 200cm long, or 5ft x 6ft 6in overall. That 10cm of extra length over the UK single and UK double is the quiet reason many taller sleepers size up: if one of you is over six foot, length can matter more than width.
Is a UK king Akrehamn heavy to move?
Ikea doesn't publish a weight for this mattress, so check their product page before buying if you need to carry it upstairs. That said, it's a 20cm all-foam design, so a UK king Akrehamn is likely to be easier to manoeuvre and rotate than a deeper sprung mattress in the same size.