Add an extra layer of comfort to your bed with this mattress topper from our luxurious Goose Down range. Encased in a super-smooth down-proof cotton cover with piped edging, the top layer is filled with 70% goose down and 30% goose feather, while the bottom layer is filled with 100% goose feather for additional comfort. The cover can be removed and washed in a domestic washing machine and is perfect for protecting and prolonging the life of your mattress. This mattress topper is 7cm thick, and is designed to fit mattress depth of up to 35cm using elasticated straps. Single to fit bed 90 x 190cm Double to fit bed 135 x 190cm Kingsize to fit bed 150 x 200cm Super Kingsize to fit bed 180 x 200cm Please note: this topper is not suitable for use with an electric blanket. This range of naturally filled duvets and pillows is now housed in Nomite marked casing: a first for the UK market. The tight weave of the cover fabric ensures no down or feathers can escape, whilst it provides an effective barrier against dust mites. This means that these ranges are suitable for house-dust-mite-allergy and asthma sufferers. Supported by scientific research, our market leading casing gives everyone the opportunity to enjoy the multiple benefits of natural fillings.