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Flaxby Platinum Lunar Double Mattress
Flaxby

Flaxby Platinum Lunar Double Mattress

The Flaxby Platinum Lunar is a traditionally made pocket sprung mattress filled with natural materials: cashmere, cotton, silk, British wool, hemp and flax.

  • Cashmere, silk & wool regulate heat
  • Hand-stitched edges, no roll-off feel
  • Double-sided, flip to even out wear
£3,999

£3,199

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Size: Double. Available at Feather & Black

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Where can I buy the Flaxby Platinum Lunar Double Mattress?

Below are the best prices for the Flaxby Platinum Lunar Mattress in a Double. Available from (9) trusted retailers.

Flaxby Platinum Lunar Mattress

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Prices last checked:
11th November 2026

Mattress dimensions for the Flaxby Platinum Lunar Double Mattress

Length: 190cm

Width: 135cm

(4ft 6in x 6ft 3in)

Minimum room size: 2.6m x 2.8m

Mattress details

Mattress Details for the Flaxby Platinum Lunar Double Mattress

Mattress

Flaxby Platinum Lunar Mattress

Size

UK Double (4ft 6in x 6ft 3in)

Firmness

Construction

  • Pocket Spring

  • Wool

  • Natural

Depth (cm)

27

Layers

Layer Details

Key benefits

Key Benefits of the Flaxby Platinum Lunar Double Mattress

  • A footprint most UK bedrooms can take: At 135 x 190cm, or 4ft 6in x 6ft 3in, it leaves space for wardrobes and drawers where a UK king would dominate.
  • Sensible width for two: You get 67.5cm each for two people sharing, which most settled couples find comfortable night after night.
  • Edge support widens the usable bed: Three rows of hand side-stitching firm up the sides, which means both of you can sleep close to the edge without that rolling-off feeling.
  • Bedding is easy and cheap to find: Double sheets and duvets are stocked everywhere, and the 27cm depth works with standard fitted sheets.
  • Natural fillings across a shared bed: Wool, cashmere and silk help regulate temperature, useful when two bodies are warming the same mattress.

Who should buy the Flaxby Platinum Lunar Double Mattress?

This size suits you if...

You're a couple in a typical UK bedroom and want a quality shared bed without giving the whole room over to it, or you sleep alone and want space to spread out, perhaps with a dog or cat claiming a corner. It also suits a well-used guest room, since a UK double handles visiting couples without swallowing a smaller second bedroom.

Consider another size if...

Your bedroom is 2.7m x 2.9m or larger and you both want more space, or one of you is over 6ft 3in. The Flaxby Platinum Lunar in a UK king is 15cm wider and 10cm longer, and we'd recommend it instead.

FAQ's

Frequently Asked Questions About the UK Double

Is the Flaxby Platinum Lunar double big enough for a couple?

For most couples, yes. You get 67.5cm each for two people sharing, and the three rows of hand side-stitching mean the full width is genuinely usable rather than lost to soft edges. If either of you is tall or a restless sleeper, the UK king adds 15cm of width and 10cm of length.

What room size do I need for the Flaxby Platinum Lunar in a UK double?

We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That allows the door to open fully and leaves walking space on both sides. If you want bedside tables on each side, the roomier end of that range makes daily life much easier.

Should I get the Flaxby Platinum Lunar in a double or a king?

It comes down to your room. The UK double is 15cm narrower and 10cm shorter than the UK king, so it fits where a king feels tight. If your bedroom offers at least 2.7m x 2.9m and you share every night, the UK king is the more generous long-term choice.

Will the Flaxby Platinum Lunar double get up narrow stairs?

A traditionally sprung mattress arrives full size, with no rolled delivery, so measure your stairs, turns and landings against 135 x 190cm before ordering. Older terraces with a tight turn are the usual pinch point. It also needs flipping to wear evenly, so make sure two people can handle it in the room.

Is a UK double a sensible size for a guest room?

Yes, and it's arguably the ideal one. A UK double accommodates visiting couples, which a UK single can't, while fitting alongside a wardrobe and drawers in a smaller second bedroom. Given the Flaxby Platinum Lunar is a significant purchase, it makes most sense for a guest room that sees regular use.