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20cm Medium Firm Memory Foam Mattress – 4ft6 Double (135 x 190cm)

20cm Medium Firm Memory Foam Mattress – 4ft6 Double (135 x 190cm)

Regular price £179.99 GBP
Regular price Sale price £179.99 GBP
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Not too soft, not too firm: the 20cm medium firm memory foam mattress in 4ft6 double is designed for sleepers who want to feel supported without sinking in. At 20cm it has noticeably more body than slim foam mattresses, which can feel flat on tired backs.

The case for medium firm

Medium firm is the all-rounder rating. It keeps the spine in a natural line for back and side sleepers and still lets foam do its pressure-easing work around the hips and shoulders.

Specification

  • Size: 4ft6 double, 135 x 190cm
  • Depth: 20cm
  • Feel: medium firm
  • Type: memory foam

Looking for something different? See orthopaedic mattresses for firmer support, or all memory foam mattresses.

Frequently asked questions

What does medium firm feel like?

Supportive with a gentle contour. You settle slightly into the surface but are held in a level position.

Is 20cm deep enough for a double bed?

Yes. 20cm is a comfortable, substantial depth that works on standard frames.

Is it good for back pain?

Many people with back discomfort prefer medium-firm support, but individual needs vary. Speak to a health professional about persistent pain.

Do I need to flip it?

Foam mattresses like this are usually one-sided. Rotate head to foot occasionally rather than flipping.

What base is best?

A solid or closely slatted base gives the most even support.

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Frequently Asked Questions

Will a 20cm medium firm mattress suit my 4ft6 double divan or bed frame?
It is cut to the standard UK double size of 135 x 190cm, so it suits most 4ft6 divans and frames. At 20cm deep it sits a little higher than slimmer mattresses, so check headboard and side rail height before ordering.
Who is a medium firm memory foam mattress for double beds aimed at?
It suits sleepers who like some cushioning but dislike sinking in too deeply. Couples with different preferences often find a medium firm feel a sensible middle ground. It is a comfort choice, so consider your sleeping position and how firm you like your bed.
What is the difference between firm and soft memory foam mattresses?
A soft memory foam mattress lets you sink further into the surface, while a firm one feels more supportive and flatter. Medium firm sits between the two, giving gentle contouring with a more stable feel when you turn over.
How does medium firm feel on a 20cm foam mattress?
Expect a balanced feel: the foam still moulds around your shoulders and hips, but you should not feel swallowed by it. Everyone's preference differs, so consider how you usually sleep and whether you favour soft or firm beds.
Will a thick memory foam mattress make me too hot?
Memory foam can retain body heat more than a sprung mattress, and a deeper build can add to that. This mattress is not sold as a cooling model, so choose lighter bedding and keep the room ventilated if you tend to run warm.
Is 20cm a deep mattress, and what does that mean for bedding?
20cm is a fairly generous depth that gives a substantial, plush look and feel. When buying fitted sheets, choose ones with a pocket depth of at least 25cm so the corners stay secure around the whole mattress.
Which bedding size matches a 135 x 190cm double mattress?
Standard UK double bedding is made for 135 x 190cm mattresses. Pick a double duvet cover and a double fitted sheet, and always compare the sheet depth against the 20cm mattress to avoid it pinging off the corners.
Does a 20cm foam mattress arrive rolled, and how long until it is ready?
Foam mattresses typically ship compressed in a box. Cut the wrapping carefully, lay the mattress flat and allow around 24 hours for it to reach full shape. Opening a window helps any slight new-foam smell disappear.
Do I need to flip this memory foam mattress?
Mattresses with a set comfort side are generally not flipped. Instead, rotate it head to foot every few months to even out wear. Keep it on a ventilated base and spot clean gently with a damp cloth when needed.
Is a medium firm foam mattress better than a hybrid or pocket sprung one?
It depends on preference. Foam gives close contouring and quiet movement, while pocket sprung and hybrid mattresses feel bouncier and more open. If you want a steadier feel with a little cushioning, medium firm memory foam is worth considering.