Arthur Sleep Spare Arthur Mattress
Mattress
Arthur Sleep Spare Arthur Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
Layers
Layer Details
- Proper space for two: At 75cm each for two people sharing, you can both change position without negotiating over territory in the small hours.
- Pocket springs suit shared beds: Each spring moves independently, which means one of you getting up at 5am is less likely to wake the other.
- Extra length for taller sleepers: The UK king is 10cm longer than the UK double, a real difference if either of you is approaching six foot.
- Medium firm across a wider surface: The medium support tension holds its feel edge to edge, so neither sleeper is stuck with a softer or firmer patch.
- Fits a normal master bedroom: We suggest at least 2.7m x 2.9m, which most UK master bedrooms manage without giving up wardrobe space.
- Compare prices in one place: The prices shown on this page update as retailers change them, so you're seeing the current cost of the king rather than a snapshot.
This size suits you if...
You share the bed every night and a double has started to feel tight, especially if one of you gets up hours before the other and you'd like the springs and the extra width to keep that disturbance to a minimum. It also makes sense if either of you is tall, since the 200cm length gives feet somewhere to go, or if a dog has quietly claimed part of the mattress and you want your share back.
Consider another size if...
Your bedroom is smaller than the 2.7m x 2.9m we suggest for a UK king. In that case we'd recommend the UK double instead, which needs around 2.6m x 2.8m and gives up 15cm of width.
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 Spare Arthur in a UK king a good size for couples?
Yes, for most. Two people sharing get 75cm of width each, and the pocket springs respond to each sleeper separately, so movement on one side transfers less to the other. If you're on different schedules, or one of you shifts position a lot at night, that combination is exactly what the UK king is for.
What room size do I need for a UK king Spare Arthur?
We suggest at least 2.7m x 2.9m for a UK king, and around 3.2m x 3.2m feels comfortable once wardrobes and bedside tables are in. New build master bedrooms can be tighter than they look on the plan, so measure with the furniture in mind, and check you can open doors and drawers fully.
Is the UK king Spare Arthur long enough for someone over six foot?
At 200cm, the UK king is 10cm longer than the UK double, and for many taller sleepers that length is the real reason to upgrade, more than the width. If either of you currently wakes with feet hanging off the end of a 190cm mattress, the king should solve it.
Should I get the Spare Arthur in a UK king or a UK super king?
The UK king is 30cm narrower than the UK super king, and the two are the same length. If your room comfortably exceeds the 3m x 2.9m we suggest for a UK super king, the extra width is lovely to have. In a typical UK master bedroom, the king is usually the sensible ceiling.
Does the Spare Arthur feel different in a king than in smaller sizes?
The medium firm feel and pocket spring construction are the same across every size. What changes is how you use it: with 75cm each, two sleepers sit more over their own springs rather than rolling towards the middle, so the mattress can do its job of supporting each of you independently.