Silentnight SleepResponse Breatheasy 1400 Pocket Sprung Super King Mattress
Silentnight

Silentnight SleepResponse Breatheasy 1400 Pocket Sprung Super King Mattress

The Silentnight SleepResponse Breatheasy 1400 Pocket Sprung Mattress combines breathable fibres with Mirapocket springs, which means air can move through the mattress while the springs support your body.

  • Breathable fibres for airflow
  • Tailored support from pocket springs
  • Aloe vera-infused sleep surface

£779

Size: Super King. Available at Dreams

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Where can I buy the Silentnight SleepResponse Breatheasy 1400 Pocket Sprung Super King Mattress?

Below are the best prices for the Silentnight SleepResponse Breatheasy 1400 Pocket Sprung Mattress in a Super King. Available from (9) trusted retailers.

Silentnight SleepResponse Breatheasy 1400 Pocket Sprung Mattress

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Prices last checked:
3rd November 2026

Mattress dimensions for the Silentnight SleepResponse Breatheasy 1400 Pocket Sprung Super King Mattress

Length: 200cm

Width: 180cm

(6ft x 6ft 6in)

Minimum room size: 3m x 2.9m

Mattress details

Mattress Details for the Silentnight SleepResponse Breatheasy 1400 Pocket Sprung Super King Mattress

Mattress

Silentnight SleepResponse Breatheasy 1400 Pocket Sprung Mattress

Size

UK Super King (6ft x 6ft 6in)

Firmness

Construction

  • Orthopaedic

  • Pocket Spring

Depth (cm)

Layers

Layer Details

Key benefits

Key Benefits of the Silentnight SleepResponse Breatheasy 1400 Pocket Sprung Super King Mattress

  • A full 90cm each: Two people sharing get 90cm of width apiece, so a partner who turns over repeatedly is much less likely to wake you.
  • A clear step up from the UK king: The UK super king is 30cm wider than the UK king but the same length, giving each of you 15cm more width.
  • Room for night-time visitors: When a small child arrives at 3am or a large dog sleeps on the bed every night, everyone keeps some space and nobody ends up clinging to an edge.
  • Breathable fibres for a busier bed: Silentnight uses breathable fibres to help regulate temperature, which may help a little when an extra body adds warmth on the bed.
  • Fills a generous room properly: In a large master or a period bedroom with high ceilings, a UK king can look slightly lost, while 6ft x 6ft 6in suits the scale of the room.

Who should buy the Silentnight SleepResponse Breatheasy 1400 Pocket Sprung Super King Mattress?

This size suits you if...

You share the bed every night with someone restless and want real distance between you, or children and pets regularly join you and you are tired of waking up squeezed. It also suits you if your bedroom comfortably clears our suggested minimum of 3m x 2.9m.

Consider another size if...

Your bedroom is under 3m x 2.9m or you sleep alone most nights. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.

FAQ's

Frequently Asked Questions About the UK Super King

What size bedroom do I need for a Silentnight Breatheasy 1400 super king?

We suggest at least 3m x 2.9m, and around 3.5m x 3.2m feels more comfortable. Check that the door can open fully and that you have space for bedside tables on both sides. In an attic bedroom with a sloping ceiling, the slope usually decides which wall the headboard can go against, so measure the full-height section first.

Is a UK super king worth it over a UK king if my partner is restless?

For most couples with a restless sleeper, yes. The UK super king is 30cm wider than the UK king at the same length, so each of you gets 15cm more. That doesn't sound like much on paper, but in the middle of the night it makes it easier to stay out of each other's way.

What bedding fits a super king Breatheasy 1400 mattress?

You'll need super king sheets and a 260 x 220cm duvet. Silentnight doesn't publish a depth for this mattress, so check the pocket depth on any fitted sheet before you buy. Super king bedding also costs more than UK king bedding, so factor in a spare set as well.

Will a super king pocket sprung mattress fit up my stairs?

At 180cm wide, a UK super king is a bulky item to carry up a tight staircase, and pocket sprung mattresses can't be folded flat the way some foam beds can. Measure the narrowest turn on the landing and the bedroom doorway first, then compare the retailers listed on this page.

Is a super king big enough for two adults and a child?

It's the most realistic size for that. Two adults get 90cm each, which is 22.5cm more each than a UK double. A small child will take some of that space, but nobody gets pushed right to the edge. If it only happens now and then, the space is generous.