# NIXNAP 25cm Hybrid King Mattress, 9-Zone Support

Source: https://www.ranked10.co.uk/home/best-king-size-mattresses/nixnap-king-mattress-5ft
Ranked #4 in "Best King Size Mattress 2026: 10 Ranked, Four Spec Sheets That Contradict Themselves": https://www.ranked10.co.uk/home/best-king-size-mattresses

- Price: £127.49 (checked on Amazon UK on 2026-09-19)
- Amazon rating: 4.6 from 108 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0FZBGRZ6J?tag=ranked10-21

The NIXNAP King Mattress is number four in this guide. It is a 5FT hybrid king, 25 cm thick, £127.49, rated 4.6 from 108 ratings, with 86 of the bars in its star breakdown sitting at five stars. Its own measurements are unusually consistent: the King (150x200cm) size, the 2L x 1.5W x 0.25Th metres field, the 200 x 150 x 25 centimetres field and the "10 Inch Hybrid" in the title all describe the same mattress — 10 inches is 25.4 cm, so the metric fields round it down by a few millimetres rather than contradicting it.

Two numbers on the page do not close. The rating is quoted as 108 ratings, but the five bars underneath add to 100 (86 + 4 + 3 + 1 + 6), and the listing does not say where the other eight went. The care field also reads "hand wash only", which is the only washing instruction given for a mattress that the same listing says weighs 29.5 kg. Everything on this page is taken from the NIXNAP listing on Amazon; none of it comes from testing by us.

## Specification

| Field | Value |
|---|---|
| Price | £127.49 |
| Rating | 4.6 out of 5 from 108 ratings |
| Star breakdown | 86 five-star, 4 four-star, 3 three-star, 1 two-star, 6 one-star — adds to 100, not the 108 stated |
| Size as listed | King (150x200cm) |
| Thickness | 25 centimetres, sold as a "10 Inch Hybrid" |
| Item dimensions (as listed) | 200 x 150 x 25 centimetres; a second field gives 2L x 1.5W x 0.25Th metres |
| Firmness | Medium firm |
| Care instructions (as listed) | Hand wash only |

## Questions people ask

**What size is the NIXNAP King Mattress?**

The NIXNAP listing gives the size as King (150x200cm) and the dimensions field as 200 x 150 x 25 centimetres, so both describe a 150 cm wide, 200 cm long mattress.

**How thick is it?**

The title calls it a 10 inch hybrid and the thickness fields say 25 centimetres. Ten inches is 25.4 cm, so the two are a few millimetres apart rather than a contradiction.

**Why do the stars not add up to the rating count?**

The page shows 4.6 from 108 ratings, but the five bars below add to 100. NIXNAP does not explain the missing eight anywhere in the listing.

**How firm is it?**

The NIXNAP spec sheet lists the firmness as medium firm, and the bullet points describe it as a medium firm king mattress.

**How soon can I sleep on it?**

The listing says the vacuum-packed mattress should be allowed at least 72 hours to fully expand before use, though it also offers a 100-night trial.

**Can I wash the cover?**

The only care instruction the NIXNAP listing gives is "hand wash only"; the cover material is listed as polyester.