Silentnight Aloe Vera Portloe Miracoil Ortho Super King Mattress
Silentnight

Silentnight Aloe Vera Portloe Miracoil Ortho Super King 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

£499

Size: Super King. Available at Dreams

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

Below are the best prices for the Silentnight Aloe Vera Portloe Miracoil Ortho Mattress in a Super King. 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 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 Aloe Vera Portloe Miracoil Ortho Super King Mattress

Mattress

Silentnight Aloe Vera Portloe Miracoil Ortho Mattress

Size

UK Super King (6ft 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 Super King Mattress

  • 90cm each: Each sleeper gets 90cm of width, which means a partner who turns over all night is simply further away from you.
  • Room for a small visitor: When a child climbs in during the early hours, the extra width means nobody ends up perched on the edge of a very firm surface.
  • A clear step up from a UK king: The UK super king is 30cm wider than the UK king and gives 15cm more each, while the length stays the same at 200cm.
  • Support right to the sides: Silentnight's edge-to-edge design is meant to limit partner disturbance, which helps on a bed this wide, where children and dogs tend to settle near the edges.
  • Cooler in a crowded bed: With two adults plus a child or pet sharing, the Breathe fibres help regulate temperature, useful if you tend to overheat once the bed fills up.

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

This size suits you if...

You share with a genuinely restless partner and want 90cm each, or a child or large dog joins you most nights, and you both like a very firm, flat surface. It also fits a large period master bedroom where a UK king would look a little undersized.

Consider another size if...

Your bedroom is smaller than 3m x 2.9m, or you usually sleep alone. 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 are the dimensions of the Silentnight Portloe Miracoil Ortho UK super king?

It measures 180 x 200cm, which is 6ft x 6ft 6in. That makes it 30cm wider than the UK king, with the same length, so check your bed frame is built for a UK super king rather than a UK king before ordering.

How big a bedroom do I need for a UK super king mattress?

We suggest at least 3m x 2.9m, and around 3.5m x 3.2m will feel comfortable to walk around. In a loft conversion, measure only the full-height floor area, because the slope of the roof often decides which wall the bed can go against.

Is the Portloe Miracoil Ortho super king better than the king for a restless partner?

The UK super king gives 90cm each against 75cm on the UK king, so 15cm more per person. Yes, you need a bigger room, but if your partner tosses and turns, that extra distance does more to protect your sleep than changing mattress would.

Will a UK super king mattress fit up my stairs?

A 180cm-wide spring mattress can struggle on tight landing turns, and Silentnight doesn't publish a depth for this one. Measure the stair width, the landing turn and the bedroom door swing first, then compare the retailers listed on this page.

What bedding do I need for a super king Portloe Miracoil Ortho?

You'll need super king sheets and a 260 x 220cm duvet. If you're moving up from a UK king or UK double, your current bedding won't fit, so plan for a new set alongside the mattress.