Rank #5 in Best King Size Mattress 2026: 10 Ranked, Four Spec Sheets That Contradict Themselves
Mellsom Hybrid King Mattress, 25cm, 7-Zone, 660 Springs
- Rating
- 4.8
- Ratings
- 101
- Rank
- #5
Price and rating as shown on Amazon when we collected them. Both change.
The Mellsom MS02 is the king-size mattress sitting at number 5 in this guide. It is a hybrid — memory foam over individually wrapped pocket springs — described on the listing as medium firm and built on a 7-zone design, with 660 coils and a 25cm thickness. It costs £127.49 and carries a 4.8 out of 5 rating from 101 ratings.
What stands out in this fiche is what the listing does with its own measurements. The product text says "every Mellsom king size mattress 150x190cm"; the size field on the same page says "King (150x200x25cm)". That is a 10cm gap between two figures a buyer would use to check the thing fits a frame. The rating breakdown carries a smaller wrinkle of its own: 89 five-star, 7 four-star and 4 one-star bars add up to 100, one short of the 101 ratings shown above them. Every figure on this page comes from the Amazon listing rather than from any testing of ours.
How those 101 ratings break down
An average hides its own shape. This is the spread behind the 4.8 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £127.49 |
|---|---|
| Rating | 4.8 out of 5 from 101 ratings |
| Rating breakdown | 89 five-star, 7 four-star, 4 one-star |
| Size given in the product text | 150x190cm |
| Size field (as listed) | King (150x200x25cm) |
| Item dimensions (as listed) | 200 x 150 x 25 centimetres |
| Coils and construction | 660 pocketed coils, hybrid, 7-zone |
| Firmness | Medium firm |
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
What size is the Mellsom MS02 king mattress?
The product text says 150x190cm, while the size field on the same listing says King (150x200x25cm) — a 10cm difference between the two.
How firm is it?
The listing describes a medium-firm feel and says it suits back, side and stomach sleepers.
What is it made of?
High-density foam, memory foam and individually wrapped pocket springs, with 660 coils and a knitted fabric cover.
What certifications does the Mellsom listing mention?
OEKO-TEX 100 and CertiPUR-US, as stated on the page.
Is there a trial period?
The listing offers a 100-night trial and 10-year support, noting that 2-4 weeks is normal to get used to a new mattress.
How much does it cost and how is it rated?
£127.49, rated 4.8 out of 5 from 101 ratings at the time of writing.
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