Silentnight Revitalise Ortho 1400 King Size Mattress
The Silentnight Revitalise Ortho 1400 is an extra firm hybrid, built around Silentnight's Mirapocket® spring system with 1400 pocket springs in the king size, topped with an ActiveBreathe comfort layer.
- Extra-firm, zoned support
- Breathable foam avoids trapped heat
- Made with 60% recycled materials
£629
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Silentnight Revitalise Ortho 1400 Mattress
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Mattress details
Mattress
Silentnight Revitalise Ortho 1400 Mattress
Size
Firmness
Extra Firm
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Eco-Friendly
Depth (cm)
26
Layers
3
Layer Details
ActiveBreathe layer
This comfort layer feels like memory foam but is ten times more breathable, which means you get pressure relief without the heat build-up. It also allows ease of movement, so you shouldn't feel stuck in one position overnight.
Mirapocket® spring system
Silentnight's pocket spring system, with 1400 springs in the king size, provides zoned support. In practice that means even weight distribution and improved spinal alignment, aimed at reducing aches and pains.
Eternity layer
A base layer that gives the mattress extra stability and long lasting resilience. It's there to help the mattress hold its shape over years of use.
Layer details from furniturevillage.co.uk product page, September 2026.
Key benefits
- 75cm of space each: Two people sharing get 75cm of width apiece, so you can settle into a firm sleeping position without negotiating for territory.
- Less partner disturbance: If one of you gets up hours before the other, the Mirapocket® springs compress individually, which means movement on one side transfers less to yours.
- Extra length for taller sleepers: At 200cm, the UK king adds 10cm of length over a UK double, a genuine relief if either of you is approaching six foot.
- The full spring count: The 1400 pocket springs quoted for this mattress apply to the king size, so you're getting the zoned support the model is named for.
- Firm support across the whole surface: Extra firm works best when neither sleeper drifts towards the middle, and the wider king footprint helps each of you stay on your own side.
This size suits you if...
You share the bed every night and a UK double has started to feel cramped, especially with an extra firm surface where you can't sink away from each other. Or one of you is on a different schedule and the early alarm keeps waking the other. Or someone in the bed is tall enough that their feet reach the end of a standard 190cm mattress.
Consider another size if...
Your bedroom can't comfortably take a king; we suggest at least 2.7m x 2.9m for this size. If space is tight, the UK double needs only 2.6m x 2.8m, and we'd recommend it instead.
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FAQ's
How big is the Silentnight Revitalise Ortho 1400 in a UK king?
It measures 150 x 200cm, or 5ft x 6ft 6in. That gives two people sharing 75cm of width each, and the 200cm length suits taller sleepers who find standard 190cm mattresses a little short at the foot end.
Does the king size Revitalise Ortho 1400 have all 1400 springs?
Yes. Silentnight quotes the 1400 pocket spring count for the king size specifically, so this size delivers the full zoned Mirapocket® support the model is named after. Smaller sizes of the same mattress will carry fewer springs in proportion to their footprint.
Is a UK king Revitalise Ortho 1400 good for couples?
It suits couples well, with one condition attached: both of you need to want an extra firm feel. The pocket springs respond individually, so a partner getting up early disturbs you less, and 75cm of width each means neither of you is sleeping on the edge. Lightweight side sleepers may still find the surface too hard.
What room size do I need for this mattress in a king?
We suggest a room of at least 2.7m x 2.9m for a UK king, with around 3.2m x 3.2m feeling comfortable once wardrobes and bedside tables are in. New build master bedrooms can be tighter than they look on the plan, so measure with furniture in mind.
Should I get the Revitalise Ortho 1400 in a king or super king?
The UK super king is 30cm wider than the UK king, at the same 200cm length, so the gain is purely width. On a firm mattress like this, that extra width helps if a dog routinely joins you or one of you moves around a lot. We suggest at least 3m x 2.9m of room for the UK super king.