Last seen for £630.88 at Archers Sleepcentre on 2nd November 2026
Rest Assured Cardigan Natural Pocket 1400 Super King Mattress
The Rest Assured Cardigan Natural Pocket 1400 is a pocket sprung mattress available in UK Single, Double, King and Super King.
- Extra-firm feel for back sleepers
- Natural wool, cashmere & silk fillings
- Hand-tufted finish for lasting shape
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
More available sizes
Last seen for £544.69 at Archers Sleepcentre on 2nd November 2026
Last seen for £467.09 at Archers Sleepcentre on 2nd November 2026
Last seen for £630.88 at Archers Sleepcentre on 2nd November 2026
Last seen for £357.04 at Archers Sleepcentre on 2nd November 2026
Mattress details
Mattress
Rest Assured Cardigan Natural Pocket 1400 Mattress
Size
Firmness
Extra Firm
Construction
Pocket Spring
Depth (cm)
Layers
Layer Details
Key benefits
- Real distance from a restless partner: You each get 90cm when sharing, and that distance matters more than any comfort layer when your partner turns over all night.
- Room when children wander in: When a child climbs in during the small hours, 180cm of width means nobody ends up balanced on the edge until morning.
- Space for a large dog: A big dog sprawled across the foot of the bed takes a much smaller bite out of your own share on a mattress this wide.
- A clear step up from the UK king: It is 30cm wider than the UK king, giving 15cm more each, so it suits a large master or period bedroom where a king can look undersized.
- Extra length over the UK double: The UK super king is 10cm longer than the UK double, so taller sleepers have a little more room before their feet reach the end.
This size suits you if...
You share with a restless partner or regularly find a child or large dog in the bed by morning, and your bedroom comfortably clears our suggested minimum of 3m x 2.9m.
Consider another size if...
Your bedroom is under our suggested 3m x 2.9m, or tight doors and landings make a 180cm mattress awkward to carry upstairs. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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FAQ's
Is the Cardigan Natural Pocket 1400 UK super king big enough for two adults and a child?
For occasional visits, yes. The UK super king measures 180 x 200cm and gives two adults 90cm each, so a small child tucked between you still leaves both adults a usable share. If a child joins you every night, this is the most width you'll find in a standard UK size.
How much more room does the Cardigan Natural Pocket 1400 super king give than the king?
The UK super king is 30cm wider than the UK king and the same 200cm length. Shared between two, that works out at 15cm more each. The difference shows most at the edges, where a restless partner is less likely to drift into your half.
Will a Cardigan Natural Pocket 1400 UK super king fit in a loft conversion bedroom?
Possibly, but the sloping ceiling will usually decide which wall it goes against. We suggest at least 3m x 2.9m of floor space, with around 3.5m x 3.2m feeling comfortable. Measure where you have full standing height rather than using the whole floor area, and check the stair turn before ordering.
Is a UK super king better than a UK double for a restless sleeper?
For most couples, yes. A UK double gives 67.5cm each when shared, while the UK super king gives 22.5cm more each. With the Cardigan Natural Pocket 1400, that extra width puts real distance between you, and distance helps a light sleeper more than anything a mattress's layers can do.
Is the Cardigan Natural Pocket 1400 super king a good choice if the dog sleeps on the bed?
If a large dog shares the bed most nights, the UK super king makes the most sense of this mattress's sizes. With 180cm of width, a dog stretched across the foot or tucked along one side takes far less of the 90cm each that two people get.