Doubleslee Memory Foam Mattress Series, 5ft King, Medium, 150 × 200 × 20 cm

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Product guide

Doubleslee Memory Foam Mattress Series, 5ft King, Medium, 150 × 200 × 20 cm

Doubleslee Memory Foam Mattress Series is a medium 5ft king all-foam mattress with a gel memory foam comfort layer and high-density foam support layer. Its stated two-layer construction and removable cover suit buyers seeking a simple foam mattress, though the listing's differing dimension formats and uncertain cover inclusion merit attention.

At a glance

The described construction combines a 4 cm gel memory foam layer with a 16 cm high-density foam support layer.
The listing says the cover is removable and machine washable.
It arrives vacuum-sealed and compressed. Allow 48–72 hours after opening for expansion, according to the listing.

Price

£141.07Save 15%

Reference price: ~~£165.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Two foam layers provide a distinct comfort layer and support layer, rather than a single undifferentiated foam filling.
Medium firmness, king sizing and the listed common base options make its intended setup clear.
A removable, machine-washable cover is claimed, which may help with routine care if the selected package includes it.

Technical specifications

21 specifications

Identity
Brand	Doubleslee
Model	MEMORY FOAM MATTRESS SERIES
Size	5FT King (150x200x20cm)
Mattress type	Standard Mattress
Firmness	Medium

Dimensions and installation
Dimensions listed	200 x 150 x 20 centimetres
Weight listed	16.9 Kilograms
Thickness	20 Centimetres
Compatible bases	Box Spring, Bunkie Board, Solid Foundation
Foldable	No

Construction and materials
Construction type	Gel Foam
Layers	2.0
Fill material	High Density Foam, Memory Foam
Comfort layer material	Gel Memory Foam
Cover material	Polyester Blend
Top style	Euro Top
Colour	Brown

Care and features
Care instructions	Machine Wash（Cover）
Special features	Breathable, Durable, Fire-Retardant, Low Motion Transfer, Removable Cover
Age range	Adult
Country of origin	China

What to know before buying

Listing details to confirm

The listing gives the size as 5FT King (150x200x20cm) and also lists dimensions as 200 x 150 x 20 centimetres, while another dimensions field uses a different metres format. Confirm the mattress size and cover inclusion in the selected listing. The feature text says a washable cover, but the explicit contents list names only a manual. The claimed cooling, back-pain relief and durability benefits are not independently established here. Allow 48–72 hours for expansion after unpacking.

What’s in the box

ManualIncluded
Removable mattress coverCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Adults looking for a medium-feel, 5ft king foam mattress with a gel memory foam comfort layer.
Buyers who can wait for a compressed mattress to expand and want a removable, washable cover, after confirming it is included.

Less suited to

Shoppers who need a pocket-sprung or hybrid mattress, since the described construction is foam.
Anyone needing confirmed cover inclusion or completely consistent size information before purchase.

Doubleslee Memory Foam Mattress Series, 5ft King, Medium, 150 × 200 × 20 cm · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 568 ratings

5 stars73%73%
4 stars12%12%
3 stars5%5%
2 stars3%3%
1 star7%7%

Customer feedback highlights comfort, a pleasing firmness level, support and improved sleep, with some customers reporting fewer body aches. For buyers considering this medium, two-layer foam mattress, those impressions are relevant to comfort expectations but do not establish a medical benefit. Opinions about sinking are mixed, so buyers sensitive to body impressions should weigh that uncertainty.

Positive themes

Customers report comfort and a firmness level they find suitable.
Some customers describe support and improved sleep, including fewer body aches.

Mixed feedback

Opinions about sinking are mixed.

Frequently asked questions

What size is this mattress?

The listing identifies it as 5FT King (150x200x20cm) and also states dimensions of 200 x 150 x 20 centimetres. Another dimensions field uses a different metres format, so confirm the selected listing's measurements.

What is inside the mattress?

The description specifies a 4 cm gel memory foam layer over a 16 cm high-density foam support layer, making a stated 20 cm total.

Does it arrive ready to sleep on?

The listing says it is vacuum-sealed and compressed. It recommends allowing 48–72 hours after opening for it to expand fully.

Is the cover included and washable?

The features describe a removable, machine-washable cover, but the explicit contents list names only a manual. Confirm cover inclusion with the selected listing.