Doubleslee MATTRESS U Single Gel Memory Foam Mattress, Medium Firm

The Doubleslee MATTRESS U is a single gel memory foam mattress listed at 90 x 190 x 20 cm with a medium-firm feel. Its two-layer foam construction and removable, washable cover may suit buyers wanting a compact foam mattress, provided the stated care and unpacking conditions fit their needs.

At a glance

The listing describes a 4-centimetre gel memory foam layer over a 16-centimetre high-density foam base.
The cover is described as removable and washable, with a bottom zip.
Vacuum-compressed packaging is described as foldable for transport through narrow doorways.
The manufacturer says to allow 48+ hours for decompression after unpacking.

Price

£84.99Save 15%

Reference price: ~~£99.99~~

Price checked: 13 Nov 2026

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Pros and cons

Pros

Two foam layers combine a gel memory foam comfort layer with a high-density foam base.
A removable, washable cover offers a practical cleaning option, according to the listing.
The stated 90 x 190 cm single size and 20 cm thickness are clearly specified.

Technical specifications

16 specifications

Identity
Brand	Doubleslee
Model	MATTRESS U
Mattress type	Standard Mattress
Construction	Memory Foam
Top style	Box Top

Dimensions and installation
Dimensions listed	190 x 90 x 20 centimetres
Size	Single (90x190x20cm)
Weight listed	9.7 Kilograms
Thickness	20 Centimetres

Materials and feel
Firmness	Medium Firm
Number of layers	2
Fill material	Gel Memory Foam, High Density Foam
Comfort layer	Gel Memory Foam
Colour	Green

Care and stated features
Care instructions	Machine Wash
Special features	Breathable, Durable, Edge Support, Fire-Retardant, Hypoallergenic

What to know before buying

Listing details to confirm

The listing calls the cover machine washable and also describes removing it through a bottom zip. Confirm the care method for the cover, rather than assuming the whole mattress is machine washable. Rotate head-to-toe weekly for the first six weeks, then every six weeks, as instructed. The manufacturer also says decompression may take 48+ hours and slight fold marks can fade during rebound.

What’s in the box

Included

Manual
Unpacker

Who is it for?

A good fit for

Buyers looking for a 90 x 190 cm single foam mattress with a medium-firm description.
People who value a removable cover and are prepared to follow the stated washing and rotation guidance.
Buyers moving a mattress through narrow doorways who may benefit from foldable vacuum-compressed packaging.

Less suited to

Shoppers needing a mattress other than the listed single size or a construction other than foam.
Anyone who needs a confirmed washable whole-mattress product. The listing's machine-wash care field does not clarify whether it applies to the cover only.

Doubleslee MATTRESS U Single Gel Memory Foam Mattress, Medium Firm · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 10 ratings

5 stars74%74%
4 stars26%26%
3 stars0%0%
2 stars0%0%
1 star0%0%

The supplied evidence contains aggregate ratings but no written customer feedback. The ratings are mostly in the higher star categories, but the small sample and lack of comments do not establish which features buyers liked or any specific drawback.

Frequently asked questions

What size is the Doubleslee MATTRESS U?

It is listed as Single (90x190x20cm), with dimensions also stated as 190 x 90 x 20 centimetres.

What is the mattress made from?

The listing specifies two layers, using Gel Memory Foam and High Density Foam. Its feature text describes a 4-centimetre gel memory foam layer over a 16-centimetre support base.

Can the mattress cover be washed?

The listing describes a removable cover with a bottom zip and says it is washable. A separate care field says Machine Wash, but does not clarify whether that instruction applies to the cover alone.

How long should it decompress after unpacking?

The manufacturer recommends 48+ hours of full decompression and notes slight fold marks may remain after compressed packaging before gradually disappearing.