Silentnight Deep Sleep quilted mattress topper on a double bed
Best Seller

Silentnight Deep Sleep Mattress Topper

5cm comfort layer • Elasticated straps • 24,000+ reviews • £23.50

4.4/5(24,432 reviews)
£23.50
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Pros

  • Instantly softens a too-firm mattress
  • Disguises dips and tiredness in an ageing mattress
  • Elasticated straps fit mattresses up to ~30cm deep
  • Machine washable and hypoallergenic
  • Over 24,000 reviews — the UK's most popular topper
  • Costs a fraction of memory foam alternatives

Cons

  • Fibre fill compresses over time — needs regular shaking out
  • Adds softness, not support — won't fix a structurally failed mattress
  • Thinner feel than 7cm+ memory foam toppers

Full Review

The Silentnight Deep Sleep topper is the UK's default answer to a too-firm or past-its-best mattress: a 5cm layer of soft hollowfibre in a quilted cover that sits on top of the mattress and changes how the bed feels for less than the cost of a takeaway for four. With over 24,000 Amazon reviews at 4.4 stars, it is comfortably the most-bought mattress topper in the country. It works in two situations. On a mattress that's too firm, the hollowfibre layer adds genuine plushness at the surface — shoulders and hips sink in rather than pressing flat. On an ageing mattress, it papers over minor dips and tired springs, buying a year or three before replacement becomes unavoidable. Elasticated corner straps hold it to mattresses up to around 30cm deep, and the whole topper is machine washable. Silentnight is Britain's biggest bed manufacturer, and the topper is hypoallergenic and produced to the company's usual safety standards. It compresses with use, as all soft fibre toppers do, and responds well to a regular shake-out. For students, renters, guest beds and anyone not ready to spend £600 on a new mattress, it's the highest-impact £23.50 you can spend on your sleep.

Specifications

DepthApprox. 5cm comfort layer
FillHollowfibre, hypoallergenic
CoverQuilted polycotton
FittingElasticated corner straps
Fits Mattress DepthUp to ~30cm
CareMachine washable
BrandSilentnight
ASINB01FZHB65A

Frequently Asked Questions

Will it fix my sagging mattress?

It disguises minor dips and tired comfort layers very effectively, but it adds softness rather than structure — a mattress with collapsed springs or a deep trench needs replacing. Think of the topper as extending a mattress's life, not resurrecting it.

How do I stop it going flat?

All hollowfibre toppers compress with use. Shake and rotate it weekly and it re-lofts well; tumble drying on low after washing also restores loft. Owners typically get years of service with that minimal routine.

Can I wash it at home?

Yes, it's machine washable — a double fits most standard machines. Wash on a gentle 40°C cycle and dry thoroughly before remaking the bed.

Topper vs memory foam — which should I buy?

Hollowfibre (this) adds plush softness and costs ~£25; memory foam adds contouring pressure relief and costs £80+. For a too-firm mattress on a budget, start here; for joint pain, foam may justify the extra.

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