Rest Assured Harris Ortho Pocket 1400 King Size Mattress
Rest Assured

Rest Assured Harris Ortho Pocket 1400 King Size Mattress

The Rest Assured Harris Ortho Pocket 1400 Mattress combines pocket springs with wool, cotton, cashmere and silk fillings, which means you get firm, supportive sleep with a natural, breathable feel.

  • Firm support for back sleepers
  • Natural wool & cotton fillings
  • Wire edge border keeps its shape

£1,208.99

Size: King Size. Available at Archers Sleepcentre

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Where can I buy the Rest Assured Harris Ortho Pocket 1400 King Size Mattress?

Below are the best prices for the Rest Assured Harris Ortho Pocket 1400 Mattress in a King Size. Available from (9) trusted retailers.

Rest Assured Harris Ortho Pocket 1400 Mattress

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Prices last checked:
1st November 2026

Mattress dimensions for the Rest Assured Harris Ortho Pocket 1400 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 Rest Assured Harris Ortho Pocket 1400 King Size Mattress

Mattress

Rest Assured Harris Ortho Pocket 1400 Mattress

Size

UK King (5ft x 6ft 6in)

Firmness

Firm

Construction

  • Natural

  • Orthopaedic

  • Pocket Spring

  • Wool

Depth (cm)

27

Layers

Layer Details

Key benefits

Key Benefits of the Rest Assured Harris Ortho Pocket 1400 King Size Mattress

  • More room each than a double: The UK king gives 7.5cm more each than the UK double, which means fewer nudged elbows and a little more space to turn without waking anyone.
  • Length for taller sleepers: At 200cm long, the UK king is 10cm longer than the UK double, so a partner over six foot is less likely to have their feet hanging off the end.
  • Less disturbance on early starts: Pocket springs in cloth sleeves move independently, which means one partner getting up before dawn should send less movement across to the other side.
  • Sides that hold their shape: A wire edge border helps the sides keep their shape, so across 150cm of width each sleeper can use their full share rather than drifting towards the middle.
  • Firm support across a wider bed: The firm feel gives each partner a flat, supportive surface, which suits couples where both sleep mostly on their backs.

Who should buy the Rest Assured Harris Ortho Pocket 1400 King Size Mattress?

This size suits you if...

You share a double, want more space each without filling the room with a UK super king, and one of you is tall enough that 190cm feels short. It also fits if you and your partner keep different hours and want to disturb each other less.

Consider another size if...

Your bedroom is under our suggested 2.7m x 2.9m, as many new build master bedrooms are once wardrobes go in. 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

What are the dimensions of the Rest Assured Harris Ortho Pocket 1400 UK king?

The UK king measures 150 x 200cm, or 5ft x 6ft 6in, and the mattress is 27cm deep. That gives two sharing sleepers 75cm each.

Is the Harris Ortho Pocket 1400 king size long enough for someone over six foot?

It's 200cm long, which is 10cm longer than the UK double and the same length as the UK super king. If one of you is over six foot, that extra length may matter more than the extra width.

How much bigger is the UK king than the UK double in the Harris Ortho Pocket 1400?

The UK king is 15cm wider and 10cm longer than the UK double. For a couple, that works out at 7.5cm more each, with the UK double giving 67.5cm each against 75cm on the UK king.

What size room do I need for a Rest Assured Harris Ortho Pocket 1400 king?

We suggest at least 2.7m x 2.9m for a UK king, with 3.2m x 3.2m comfortable. Measure once wardrobes and bedside tables are in place, because a room can feel much smaller once furniture fills it.

Should couples choose the UK king or the UK super king in this mattress?

The UK super king gives 90cm each, 15cm more per person than the UK king, but we suggest at least 3m x 2.9m for it. If your room only just clears the UK king's minimum, the UK king gives most couples a clear step up from a double without crowding the room.