Silentnight Anti-Allergy Duvet reviewed

The Silentnight Anti-Allergy Duvet is a hollowfibre duvet whose filling Silentnight says is approved by the British Allergy Foundation, the charity that trades as Allergy UK. It comes in 4.5, 7.5, 10.5 and 13.5 tog, in single, double and king, and the 10.5 tog double costs £22.

What the allergy seal means

Allergy UK lists products that carry its endorsements on its approved products page; the Seal of Approval is meant for products independently tested to reduce or remove allergens indoors. Silentnight says the fibres protect the duvet against dust mites and bacteria. That is a claim about the filling, so the duvet still needs regular washing, and it is rated for 40°C rather than a hot wash.

Sizes and prices

We checked these prices on silentnight.co.uk on 26 October 2026, when the 4.5, 7.5 and 10.5 tog versions were reduced by £2 to £3 and the 13.5 tog was at full price. The other togs cost a pound or two more or less than the 10.5 tog.

Who it suits, and the drawbacks

It suits anyone with a dust-mite allergy who wants a cheap duvet they can replace often, and households that want a 4.5 tog for summer and a 13.5 tog for winter without spending much. There is no super king, the 40°C wash limit rules out hot washing, and at the lower togs the hollowfibre feels thin next to a cluster-fibre or down duvet.