Rank #6 in Best King Size Mattress 2026: 10 Ranked, Four Spec Sheets That Contradict Themselves
Queblox 11-Inch King Mattress, 7-Zone Pocket Spring, 28cm
Price and rating as shown on Amazon when we collected them. Both change.
The Queblox king size mattress takes sixth place in our guide to king size mattresses. It is a 5ft mattress — 150 x 200 cm — selling at £129.99, rated 4.6 out of 5 from 285 ratings, and described in its title as an 11 inch memory foam, 7 zone orthopedic model. The 11 inches check out against the rest of the listing: 28 cm is 11.02 inches, and 28 cm is what three separate fields give for the thickness.
The awkward part is what it is made of. The listing's own fields disagree: 'Construction Type' says Memory Foam, while 'Mattress Coil Type' says Pocketed Coil, and the first bullet describes an 'individually pocket-spring mattress' with a memory foam layer. A hybrid can honestly be both, but the field a shopper filters on picks one and drops the other, so the springs are easy to miss. Two further numbers in the same listing deserve a second look. The star breakdown supplied with it accounts for 100 ratings — 80 of them five-star — while the count shown to shoppers is 285. And 'Mattress Base Compatibility' is narrowed to 'Slatted Base' even though the bullet text says the mattress suits sprung bases, bunk beds, slatted bases and floor setups. Every specification, price and rating on this page comes from the Amazon listing for the Queblox mattress, not from testing by us.
How those 285 ratings break down
An average hides its own shape. This is the spread behind the 4.6 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £129.99 |
|---|---|
| Rating | 4.6 out of 5, from 285 ratings |
| Size (as listed) | 150x200x28 cm |
| Item Thickness | 28 Centimetres |
| Item Dimensions | 200 x 150 x 28 centimetres |
| Construction Type (as listed) | Memory Foam |
| Mattress Coil Type (as listed) | Pocketed Coil |
| Item Firmness Description | Medium Firm |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“I was so scared to buy thos as it was in a box, I was worried I would have to send it back. But, I'm sooooo happy with this as I have back issues and is exactly what I needed. This is a best buy for me, I love the thickness of the matteress and the fact I have to climb into bed is what I love lol. I would definitely recommend this mattress you won't be disappointed, I love that it's heavy duty also”
Verified purchase“Very solid and comfortable. I see what other buyers said about seating on the edge not firm but it's not much issue. It's fit for purpose as sleeping is comfortable. The height is also great and makes the bed have a porsche feeling. I love it. Will buy another one soon.”
What it is up against
The rivals it was ranked against in Best King Size Mattress 2026: 10 Ranked, Four Spec Sheets That Contradict Themselves.
Questions people ask
How thick is the Queblox king size mattress?
The listing gives 28 centimetres in three places: 'Size' as 150x200x28 cm, 'Item Thickness' as 28 Centimetres, and 'Item Dimensions' as 200 x 150 x 28 centimetres. The title calls it 11 inch, which is 27.94 cm.
Is the Queblox mattress memory foam or pocket sprung?
The listing says both. 'Construction Type' is Memory Foam, 'Mattress Coil Type' is Pocketed Coil, and the first bullet describes an individually pocket-spring mattress with a specialised memory foam layer.
What bed base does the Queblox mattress fit?
'Mattress Base Compatibility' lists Slatted Base only. The bullet text goes wider, saying it is compatible with most bed bases including sprung bases, bunk beds, slatted bases and floor setups.
How firm is the Queblox mattress?
'Item Firmness Description' says Medium Firm, and the first bullet describes medium-firm comfort with 7-zone support aimed at shoulders, back, hips and legs.
What does the Queblox mattress cost and how is it rated?
£129.99, rated 4.6 out of 5 from 285 ratings as shown on the listing.
How is the Queblox mattress delivered?
Vacuum-packed in a box, according to the listing, with all foam layers CertiPUR-US certified and the fabric carrying the OEKO-TEX STANDARD 100 label.
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