Arthur Sleep Everyday Arthur King Size Mattress
The Everyday Arthur from Arthur Sleep is a pocket spring mattress with 1000 pocket springs and a memory foam comfort layer.
- Eases pressure at shoulders & hips
- Minimises partner disturbance
- Suits guest rooms & first flats
£335
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Arthur Sleep Everyday Arthur Mattress
More available sizes
Mattress details
Mattress
Arthur Sleep Everyday Arthur Mattress
Size
Firmness
Medium
Construction
Pocket Spring
Depth (cm)
Layers
2
Layer Details
Memory foam layer
A memory foam layer sits at the top, which means the surface moulds gently to your body as it warms. This is where the pressure relief comes from.
Pocket springs
Beneath the foam, 1000 pocket springs form the core of the mattress. Each spring is sewn into its own fabric pocket, so it responds to your weight individually and helps keep movement from travelling across the bed.
Layer details from mattressman.co.uk product page, September 2026.
Key benefits
- 75cm each for two sharing: Two people get 75cm of width apiece, which means you can turn over without negotiating for territory in the middle of the night.
- Springs that keep movement local: The 1000 pocket springs move independently, which matters more at king width, as one partner getting up early is less likely to wake the other.
- Extra length for taller sleepers: At 200cm long, the UK king adds 10cm over the UK double, a real relief if either of you is approaching six foot.
- A cheap route to a bigger bed: Sizing up usually means spending up, but this is a budget mattress throughout, so the king remains an affordable purchase.
- Cushioning at pressure points: The memory foam layer softens the surface at shoulder and hip, useful when you finally have the room to settle into your preferred position.
This size suits you if...
You share the bed every night and a double has started to feel cramped, especially if one of you is tall enough to appreciate the extra 10cm of length. It also suits couples on different schedules, since the pocket springs limit the disturbance when one of you slips out hours before the other, or anyone furnishing a bigger bedroom 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, or you sleep alone and the width would go unused. We'd recommend the UK double instead, which needs around 2.6m x 2.8m.
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FAQ's
Is the Everyday Arthur in a UK king big enough for a couple?
Yes, comfortably for most. At 150cm wide, two people sharing get 75cm each, which is 15cm more total width than a UK double offers. Across the bed, the 1000 pocket springs respond to each sleeper individually, so restless nights on one side travel less to the other. Lightweight sleepers should still expect a fairly simple, budget-level feel.
What room size do I need for a king size Everyday Arthur?
We suggest at least 2.7m x 2.9m for a UK king, with more feeling noticeably better once wardrobes and bedside tables are in. New build master bedrooms can be tighter than they look on the plans, so measure with the furniture placed before committing. If the room is smaller, the UK double needs around 2.6m x 2.8m.
How big is the Everyday Arthur UK king in feet?
It measures 5ft x 6ft 6in, which is 150 x 200cm. That makes it 15cm wider and 10cm longer than the UK double version of the same mattress. Standard UK king sheets and bedding fit it, so there's nothing unusual to shop for.
Is the UK king Everyday Arthur good for a tall sleeper?
The length helps. At 200cm, the UK king runs 10cm longer than the UK single, UK small double and UK double, all of which are 190cm. For anyone around six foot or over, that gap is the difference between feet on the mattress and feet hanging off it. Arthur Sleep doesn't publish a depth, so check before pairing with fitted sheets you already own.
Is the king the biggest size the Everyday Arthur comes in?
Yes. The Everyday Arthur runs from UK single up to UK king, so there's no super king option. If 150cm of width is your minimum, this is the size to buy, and the prices shown on this page are updated as retailers change them, so compare before you order.