Last seen for £652.50 at Mattress Man on 10th November 2026
Silentnight Pocket 1400 Eco Comfort Ortho Super King Mattress
The Silentnight Pocket 1400 Eco Comfort Ortho is a pocket spring mattress with 1,400 individual springs, which means each spring moves on its own to follow the shape of your body rather than pressing back as one solid unit.
- Firmer feel for back & front sleepers
- Minimises partner disturbance
- Hypoallergenic & breathable
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 £535 at Mattress Man on 10th November 2026
Last seen for £625 at Mattress Man on 9th October 2026
Last seen for £652.50 at Mattress Man on 10th November 2026
Last seen for £535 at Mattress Man on 10th November 2026
Last seen for £405 at Mattress Man on 10th November 2026
Mattress details
Mattress
Silentnight Pocket 1400 Eco Comfort Ortho Mattress
Size
Firmness
Firm
Construction
Pocket Spring
Eco-Friendly
Depth (cm)
Layers
Layer Details
Key benefits
- 90cm each for two sleepers: Two people sharing get 90cm each, which means you can spread out fully without ever meeting in the middle.
- Distance plus pocket springs: The 1,400 individual springs move independently, and at this width your partner's fidgeting happens far enough away that you rarely feel it at all.
- Room for the whole household: When children or a large dog treat your bed as theirs, the extra width means the adults still get a proper night's sleep.
- Firm support across the full width: The firmer, orthopaedic-style feel stays consistent edge to edge, useful when three bodies end up spread across one mattress.
- A clear step up from the UK king: The UK super king is 30cm wider than the UK king and the same length, and that extra width is where the difference shows.
This size suits you if...
You share the bed every night and want the most space a standard UK size offers, your partner moves around enough that distance matters more than any comfort layer, or children and pets regularly join you and everyone still needs their share. It also suits a large master or period bedroom where a UK king would look a little lost against the wall.
Consider another size if...
Your bedroom falls short of the 3m x 2.9m we suggest as a minimum for this size, or you sleep alone. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m and shares the same 200cm length.
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FAQ's
Is the UK super king Silentnight Pocket 1400 good if my partner is restless?
Yes, and arguably the size does more than the springs here. The 1,400 pocket springs respond to each sleeper separately, so movement transfers less than it would through a solid unit, but 90cm of width each means most fidgeting happens too far away to notice in the first place.
Should I choose the UK super king or the UK king in this mattress?
If your room comfortably clears 3m x 2.9m, the UK super king is the better sharing size: it's 30cm wider than the UK king and the same length, which is the difference between tolerating a restless partner and forgetting they're there. In a tighter room, the UK king keeps walkways usable.
Is a super king too big if children climb in at night?
It's the size that copes best with it. At 180cm wide, a child between two adults still leaves everyone a workable share, where the same arrangement on a smaller size pushes one parent to the edge. The firmer feel also holds up well with an extra body aboard.
How do you rotate the Silentnight Pocket 1400 in a UK super king?
It's a one-sided mattress, so you rotate it head to foot rather than flipping it. At 6ft x 6ft 6in that's a two-person job, so plan to do it together every few months to even out wear where you each sleep.
How much floor space does the UK super king need?
The mattress itself is 180 x 200cm. We suggest a room of at least 3m x 2.9m, and around 3.5m x 3.2m feels comfortable once you add bedside tables and walking space. Check door swing and any landing turns before ordering, because this size is the one that catches people out.