Silentnight Lift Breathe Mattress
Mattress
Silentnight Lift Breathe Mattress
Size
Firmness
Medium
Construction
Depth (cm)
31
Layers
3
Layer Details
- Intense™ sleep surface. The top surface, which Silentnight states is scientifically proven to reduce cortisol levels and morning stress brought on by the menopause. In practice, this is the layer aimed at calmer, less disrupted mornings.
- Breathable Sleep System. A layer designed to reduce night sweats by enhancing breathability and moving heat and moisture away from your body. If you tend to sleep hot, this is the part of the build doing the heavy lifting for you.
- Mirapocket® springs. 1600 individual pocket springs that adjust to your body weight, giving zoned, tailored support. Each spring moves independently, which means less motion transfer if you share a bed.
Layer details from silentnight.co.uk product page, September 2026.
- 90cm of width each: Two people sharing get 90cm each, which means a restless partner or an early alarm on their side is far easier to sleep through.
- Space absorbs the wriggling: The 1600 Mirapocket springs move independently to limit motion transfer, and at this width there's simply more mattress between you and the disturbance.
- Room for night-time visitors: When a child pads in at 3am, or the dog treats the bed as routine, 180cm means nobody ends up clinging to an edge.
- Cooling that isn't shared: The Breathable Sleep System moves heat and moisture away from the body, and the extra width stops you sharing your partner's warmth all night too.
- 30cm wider than a UK king: The UK super king is 30cm wider than the UK king and the same length, a difference you feel every night if you currently share a smaller bed.
This size suits you if...
You share the bed every night and want the most undisturbed sleep a standard size can offer, your partner is genuinely restless and distance matters more than any comfort layer, or children and pets regularly join you and everyone still needs a fair share. Your room should comfortably clear our suggested 3m x 2.9m minimum, ideally with space to walk round both sides.
Consider another size if...
Your bedroom is smaller than the 3m x 2.9m we suggest as a minimum, or you sleep alone. We'd recommend the UK king instead: it's 30cm narrower, the same length, and needs at least 2.7m x 2.9m.
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Is the Silentnight Lift Breathe UK super king worth it for a restless partner?
Yes, and arguably more than any comfort feature would be. The 1600 pocket springs already limit motion transfer, but at 180cm wide you each get 90cm, so most of their tossing happens too far away to wake you. If broken sleep is your main complaint, the width does as much as the mattress itself.
Should I choose the Silentnight Lift Breathe in a UK king or super king?
If your room clears our suggested 3m x 2.9m for the UK super king and you share the bed, take the bigger size: it's 30cm wider than the UK king at the same length. If the room is tighter, or a super king would leave no space to walk round the bed, the UK king needs at least 2.7m x 2.9m.
Is a UK super king big enough to share with children or pets?
It's the size we'd point families to. At 180 x 200cm, a child wandering in at night, or a large dog with fixed habits, can join you without anyone losing a workable share of the bed. With 90cm each for two adults, there's a little give before things feel crowded.
How much space does each person get on the UK super king?
90cm each for two people sharing, across the 180cm width. That's enough to change position freely without touching, and combined with the Breathable Sleep System moving heat away from your body, it also means less shared warmth, which matters if night sweats are the reason you're buying this mattress.
Will the Silentnight Lift Breathe super king fit in my bedroom?
We suggest a minimum room of 3m x 2.9m for this size, and honestly a bit more feels better once wardrobes and bedside tables are in. Before ordering, check the route as well as the room: door swings, tight landing turns and stair angles catch people out at 6ft x 6ft 6in. For current prices, compare the retailers listed on this page.