Treat yourself to the best night's sleep with one of our top-of-the-range, all-natural duvets. Quite simply the king of fillings, our Siberian goose down is supremely soft, beautifully lightweight and fantastically insulating. The 10.5 tog rating offers just the right level of warmth for spring and autumn, when the temperatures are cooler at night but not freezing. Whilst the gorgeously warm 13.5 tog rating, will give a comfortable night's sleep in winter-cold conditions. Both are filled with 90% superior goose down and 10% superior goose feathers. The goose down forms soft clusters for lightweight insulation, kept perfectly distributed with cassette stitching of down-proof baffle walls. The casing is made of luxury fine end cotton. Our Siberian goose down is sourced from Hungary.