# Silentnight Deep Sleep Mattress Topper Double Bed, Hollowfibre

Source: https://www.ranked10.co.uk/home/best-mattress-topper/silentnight-deep-sleep-topper
Ranked #10 in "Best Mattress Topper 2026: What 10cm Really Means": https://www.ranked10.co.uk/home/best-mattress-topper

- Price: £21.34 (checked on Amazon UK on 2026-09-11)
- Amazon rating: 4.4 from 18,386 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B076M25714?tag=ranked10-21

This is the topper that proves the point of the whole ranking. It has the second-largest sample of ratings collected here — 18,386 of them at 4.4 stars — and it costs £21.34. It also weighs 1.2kg, which is less filling than the 5cm topper above it and roughly a seventh of what the memory foam toppers at the top carry.

To be fair to Silentnight, the listing never claims a depth: the title and bullets say Deep Sleep, enhanced comfort layer and soft support, and nothing in centimetres. The trap is in the search results, where a £21 topper with eighteen thousand ratings and a confident name looks like the same product as a 10cm topper. It is not, and its own weight column is how you can tell.

## Specification

| Field | Value |
|---|---|
| Stated thickness | Not stated |
| Item weight as listed | 1.2 kg |
| Price per kg of filling | £17.78 |
| Filling | Hypoallergenic hollowfibre |
| Warranty | Two years from purchase |
| Size as listed | 193 x 137 cm |

## Questions people ask

**How thick is it?**

The listing does not state a depth. What it does state is an item weight of 1.2kg, which is less filling than the 5cm topper ranked above it.

**Why is it tenth?**

Because of the price per kilogram of filling. At £21.34 for 1.2kg it works out at £17.78 per kg, the most expensive in this ranking, against £9.80 on the BONNVIA.

**Is it a bad topper?**

No. 18,386 ratings at 4.4 stars and a two-year guarantee are real. It is a comfort layer for softening a firm mattress, not a 10cm depth upgrade.

**Can I machine wash it?**

Yes, the listing states it is machine washable and hypoallergenic.

**Does it stay in place?**

It uses elasticated corner straps, and buyers do not describe it sliding.

**How many ratings does it have?**

18,386 at the time of collection, averaging 4.4 stars, with 67 per cent five-star and 3 per cent one-star.