Silentnight Memory Cool 1000 Pocket Mattress
Mattress
Silentnight Memory Cool 1000 Pocket Mattress
Size
Firmness
Construction
Depth (cm)
29
Layers
2
Layer Details
- Memory Cool™. A graphite-infused memory foam that moulds to your body to relieve pressure, which means less pushback at your hips and shoulders. The graphite actively transfers heat away from you, and Silentnight claims it creates a sleep environment 15% cooler than standard memory foam.
- Mirapocket® springs. 1000 Mirapocket® springs, each held in its own individual pocket so they respond to every movement independently. In practice that means zoned support where you need it and less of the whole-bed wobble you get with open-coil mattresses.
Layer details from silentnight.co.uk product page, September 2026.
- 90cm each, every night: Two people sharing get 90cm each, so a partner who turns over frequently is happening at a distance rather than against your back.
- Pocket springs meet space: The 1000 Mirapocket springs absorb movement where it happens, and at this width the disturbance often fades before it reaches your side at all.
- Room for midnight visitors: When a child pads in at 3am, or a large dog treats the bed as routine, 180cm of width means everyone still gets a genuine share.
- Cooler at a size that runs warm: Two bodies plus a pet generate real heat, so the graphite-infused Memory Cool layer matters more in a super king than in any smaller size.
- Fills a larger master properly: In a period property or a generous new build master, a UK king can look undersized; at 6ft x 6ft 6in this size sits in proportion.
This size suits you if...
You share the bed every night and want the maximum space stocked as standard, your children or pets regularly join you and a UK king has started to feel crowded, or you have a larger master bedroom where anything smaller looks lost. Restless couples benefit most: the 90cm each per sleeper does more for undisturbed nights than any comfort layer could.
Consider another size if...
Your bedroom falls short of our suggested 3m x 2.9m minimum, or you sleep alone. The UK king is 30cm narrower and the same length, and we'd recommend it instead; allow at least 2.7m x 2.9m for that size.
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How much space do two people get on a super king Memory Cool 1000?
You get 90cm each for two people sharing, across the full 180 x 200cm surface. That is enough for both of you to stretch out, change position and sleep without touching, and it leaves a workable share when a child or dog climbs in overnight.
What size room do I need for the Memory Cool 1000 in a UK super king?
We suggest at least 3m x 2.9m. That allows walking space on both sides and room for bedside tables, and it is our guidance rather than Silentnight's. Measure your door swing and any landing turns too, because a mattress this size is awkward through tight corners.
Should I choose the UK king or UK super king in this mattress?
The UK super king is 30cm wider than the UK king, and the two are the same length, so the decision is purely about width and room size. If your bedroom clears our 3m x 2.9m suggestion for the UK super king, the extra 30cm is what restless couples and sharing families feel most. Smaller rooms suit the UK king better; allow at least 2.7m x 2.9m for that size.
Is the super king Memory Cool 1000 good for couples where one person is restless?
Yes, arguably the best case for this size. The 1000 Mirapocket springs each move independently, so your partner's shifting is absorbed locally rather than rippling across the bed, and the 90cm each of width adds physical distance on top. Between the two, most movement never reaches you.
Does the Memory Cool 1000 super king stay cool with two people sharing?
It is designed to. The graphite-infused memory foam draws heat away from your body, and Silentnight claims the Memory Cool layer creates a sleep environment 15% cooler than standard memory foam. Two sharers, or a family plus a dog, generate more warmth than one sleeper, so the pocket spring airflow underneath helps here too.