Silentnight Sleep Now Reset King Size Mattress
Silentnight

Silentnight Sleep Now Reset King Size Mattress

The Silentnight Sleep Now Reset Mattress uses Miratex foam that moulds to your body and spreads weight evenly, which means you get edge-to-edge medium support that suits couples.

  • Medium feel for most sleepers
  • Moulds to your body shape
  • 365-night trial & 10-year guarantee

£269

Size: King Size. Available at Silentnight

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Where can I buy the Silentnight Sleep Now Reset King Size Mattress?

Below are the best prices for the Silentnight Sleep Now Reset Mattress in a King Size. Available from (9) trusted retailers.

Silentnight Sleep Now Reset Mattress

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Prices last checked:
1st November 2026

Mattress dimensions for the Silentnight Sleep Now Reset King Size Mattress

Length: 200cm

Width: 150cm

(5ft x 6ft 6in)

Minimum room size: 2.7m x 2.9m

Mattress details

Mattress Details for the Silentnight Sleep Now Reset King Size Mattress

Mattress

Silentnight Sleep Now Reset Mattress

Size

UK King (5ft x 6ft 6in)

Firmness

Medium

Construction

  • Foam

  • Rolled

Depth (cm)

14

Layers

Layer Details

Key benefits

Key Benefits of the Silentnight Sleep Now Reset King Size Mattress

  • More room each than a double: You each get 75cm of width, which means a restless partner's elbow is less likely to land on your side of the bed.
  • Length for taller sleepers: At 200cm long, it gives anyone over six foot room to stretch out, so their feet stay on the mattress rather than hanging over the edge.
  • Quieter for different schedules: Silentnight says there's no roll-together, so if one of you gets up hours before the other, the sleeper left behind should stay in their own space.
  • Usable to the edges: Silentnight describes edge-to-edge support, which means the full 150cm width is sleepable rather than just the middle.
  • Space for pillows and repositioning: In pregnancy or the months after, the extra width leaves room for propping pillows without pushing your partner towards the edge.
  • Rolled for tight stairs: A UK king arrives vacuum-packed, so you can carry it up a narrow staircase and unroll it where the bed will stand.

Who should buy the Silentnight Sleep Now Reset King Size Mattress?

This size suits you if...

You share the bed every night and keep bumping into each other in a UK double, one of you is close to or over six foot and needs the 200cm length, or you get up at different times and want a little more distance between you.

Consider another size if...

Your bedroom is smaller than our suggested 2.7m x 2.9m. In that case, we'd recommend the UK double instead, which needs at least 2.6m x 2.8m.

FAQ's

Frequently Asked Questions About the UK King

How much space does a couple get on a Silentnight Sleep Now Reset UK king?

Each of you gets 75cm of width on the 150 x 200cm mattress. On the UK double version you'd get 67.5cm each, so the UK king gives you 7.5cm more per person. On a medium foam mattress, that small gain can mean far fewer nights where you nudge each other awake.

Is the Sleep Now Reset king size long enough for someone over six foot?

The UK king is 200cm long, which is 10cm longer than the UK double and the UK single. If the taller partner currently hangs off the end of a 190cm bed, the extra length on the UK king is the change they'll notice most.

What size bedroom do I need for a UK king Silentnight Sleep Now Reset?

We suggest allowing at least 2.7m x 2.9m. New build master bedrooms can feel tighter than the plans suggest once wardrobes go in, so measure the floor space you'll actually have left before ordering.

Should I get the Sleep Now Reset in a UK king or UK super king?

The UK super king is 30cm wider than the UK king but the same length. It gives 90cm each, compared with 75cm each on the UK king, and we suggest at least 3m x 2.9m for it. Silentnight sells the Sleep Now Reset in a UK single, UK double and UK king only, so a UK super king isn't an option for this mattress.

Will a dog on the bed fit on a Sleep Now Reset UK king?

A UK king gives two people 75cm each, so a small or medium dog curled at the foot usually fits without forcing anyone towards the edge. With a larger dog that sprawls, two adults will feel the squeeze, although you'll still have more room than on a UK double.