Silentnight Aloe Vera Portloe Miracoil Ortho King Size Mattress
Silentnight

Silentnight Aloe Vera Portloe Miracoil Ortho King Size Mattress

The Silentnight Aloe Vera Portloe Miracoil Ortho Mattress pairs zoned Miracoil springs with an extra-firm feel, which means you get flat, unyielding support with very little sink.

  • Extra-firm feel with very little sink
  • Zoned support for your body
  • Hypoallergenic aloe vera cover

£449

Size: King Size. Available at Dreams

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Where can I buy the Silentnight Aloe Vera Portloe Miracoil Ortho King Size Mattress?

Below are the best prices for the Silentnight Aloe Vera Portloe Miracoil Ortho Mattress in a King Size. Available from (9) trusted retailers.

Silentnight Aloe Vera Portloe Miracoil Ortho Mattress

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Prices last checked:
1st November 2026

Mattress dimensions for the Silentnight Aloe Vera Portloe Miracoil Ortho 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 Aloe Vera Portloe Miracoil Ortho King Size Mattress

Mattress

Silentnight Aloe Vera Portloe Miracoil Ortho Mattress

Size

UK King (5ft x 6ft 6in)

Firmness

Extra Firm

Construction

  • Orthopaedic

  • Pocket Spring

Depth (cm)

Layers

Layer Details

Key benefits

Key Benefits of the Silentnight Aloe Vera Portloe Miracoil Ortho King Size Mattress

  • More room each than a double: You each get 75cm of width, 7.5cm more per person than the UK double, which means fewer elbows and less waking when your partner turns over.
  • Length for taller sleepers: At 200cm long, the UK king adds 10cm over the UK double, so a partner over six foot is less likely to end up with their feet over the end.
  • Steadier for split schedules: Silentnight's edge-to-edge spring design is intended to limit movement crossing the bed, which helps if one of you gets up hours before the other.
  • Firm support across a wider bed: The zoned Miracoil springs run the full UK king width, which means support stays shaped to your shoulders and hips on whichever side you sleep.
  • Room to sit up and get out: The extra width gives space to prop pillows or shift position in pregnancy, or to get out slowly after an injury without disturbing your partner.

Who should buy the Silentnight Aloe Vera Portloe Miracoil Ortho King Size Mattress?

This size suits you if...

You share the bed every night and you're starting to feel cramped in a double, especially if one of you is over six foot. It also fits if you both like a very firm mattress and keep disturbing each other through early starts or restless nights.

Consider another size if...

Your bedroom is under our suggested minimum of 2.7m x 2.9m. In that case, we'd recommend the UK double instead, for which we suggest at least 2.6m x 2.8m.

FAQ's

Frequently Asked Questions About the UK King

What room size do I need for a UK king Silentnight Portloe Miracoil Ortho?

We suggest at least 2.7m x 2.9m for a UK king, which leaves space to walk round both sides. New build master bedrooms can feel smaller once wardrobes go in, so measure from the fitted furniture rather than the bare walls before you order.

How much space do two people get on the UK king Portloe Miracoil Ortho?

Each of you gets 75cm of width on the UK king. That is 7.5cm more each than the UK double, and 15cm less each than the UK super king, which gives 90cm per person.

Is the UK king Portloe Miracoil Ortho long enough for someone over 6ft?

The UK king is 200cm long, 10cm more than the UK double, the UK small double and the UK single. For a partner over six foot, that extra length can matter more than the width, as their feet are less likely to hang over the end.

Should I get the UK king or the UK super king Portloe Miracoil Ortho?

Both are 200cm long, so the choice is about width and room. The UK super king is 30cm wider but needs at least 3m x 2.9m by our guidance, against 2.7m x 2.9m for the UK king. If a dog shares the bed most nights, the extra width may be worth the space.

Will a UK king Portloe Miracoil Ortho help if my partner gets up early?

The UK king gives you each 75cm, and Silentnight's edge-to-edge spring design is meant to reduce movement passing across the bed. Bear in mind it is extra firm, so a partner who sleeps on their side may find the shoulders and hips feel pressured.