# eXtreme comfort ltd Diamond Essential Grey Single Mattress, Foam Free, 18cm

Source: https://www.ranked10.co.uk/home/best-cheap-mattress/foam-free-bonnell
Ranked #6 in "Best Cheap Mattress 2026: What Fifty Pounds Actually Buys": https://www.ranked10.co.uk/home/best-cheap-mattress

- Price: £56.95 (checked on Amazon UK on 2026-09-13)
- Amazon rating: 4.1 from 520 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B09TBGMDHS?tag=ranked10-21

The eXtreme comfort Diamond single mattress costs £56.95 and is rated 4.1 stars from 520 ratings, with a Bonnell open coil spring unit and an eighteen centimetre depth.

It takes sixth because it is the only mattress here sold on what it does not contain — foam — with a named spring type instead, and an 80 kilogram limit that makes it a mattress for one ordinary adult.

## Specification

| Field | Value |
|---|---|
| Construction | Bonnell open coil springs |
| Foam | None, and the listing says so |
| Weight limit | 80 kilograms |
| Depth | 18 centimetres |
| Layers | 7 |
| Price | £56.95 |

## Questions people ask

**Does it contain foam?**

No, and the listing leads with that.

**What springs does it have?**

Bonnell open coils, the traditional design.

**How much can it take?**

80 kilograms.

**Is it firm?**

No firmness is given.

**Why is it sixth?**

Because it is the honest alternative to a foam slab with a low weight limit.

**How many ratings does it have?**

520 at the time of collection, averaging 4.1 stars, with 64 per cent five-star and 15 per cent one-star.