Rank #9 in Best Mattress Topper 2026: What 10cm Really Means
4AS Supersoft 5cm Microfibre Mattress Topper Double Bed
Price and rating as shown on Amazon when we collected them. Both change.
The 4AS is the smallest topper in this ranking at 5cm, and it makes the article's point better than anything else on the page. It weighs 1.5kg for those 5cm; the 10cm Silentnight Deep Sleep weighs 1.2kg for its claimed depth. In other words, the half-height topper carries more filling per centimetre than a best seller with eighteen thousand ratings.
So this is the choice for softening a mattress rather than rebuilding it. If your bed is simply firmer than you like and you do not want to add 7cm or 10cm of bulk, 5cm at £23.99 with elastic corner straps is the sensible amount of product.
How those 63 ratings break down
An average hides its own shape. This is the spread behind the 4.3 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Stated thickness | 5 cm |
|---|---|
| Item weight as listed | 1.5 kg |
| Price per kg of filling | £15.99 |
| Filling | 100% microfibre |
| Fixing | Elasticized corner straps |
| Care | Machine washable |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Amazing so soft and makes a world of difference to my sleep”
Verified purchase“I am glad i bought this mattress topper.its very comfortableIts good value for money.”
What it is up against
The rivals it was ranked against in Best Mattress Topper 2026: What 10cm Really Means.
Rank #1
BONNVIA 7cm Memory Foam Mattress Topper Double with Bamboo Fibre Cover
£79.99
Rank #2
Bacalar 7cm Memory Foam Mattress Topper Double, 7-Zone Support
£82.99
Rank #3
BEDLORE Mattress Topper Double Bed, Viscose Derived from Bamboo
£48.99
Rank #4
MightySoft 10cm Extra Deep Quilted Microfiber Mattress Topper Double
£26.99
Questions people ask
Is 5cm enough to make a difference?
For a mattress that is simply too firm, yes. For a dip or a sagging middle, no — that needs the 7cm memory foam toppers above.
How does it compare with the 10cm toppers?
It carries more filling per centimetre, 0.30kg against 0.12kg on the Silentnight Deep Sleep, and it does not add as much height to the bed.
Will it stay in place?
It uses elasticized corner straps, which hold the corners rather than covering the whole mattress like a fitted skirt.
Can I wash it?
Yes, it is machine washable microfibre.
How many ratings does it have?
63 at the time of collection, averaging 4.3 stars — the smallest sample in this ranking, so weigh it accordingly.
What size is it?
137x190cm, a UK double, for a 5cm layer.
Comments
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