Duvet: Get a 10.5 tog duck feather duvet. Winter essential: Perfect for the colder months. Filling: Made from 85% duck feather and 15% down with a 100% soft-touch microfibre cover. Design: Features piped edging with box baffle stitching to keep the feathers in place. Hypoallergenic: Dust mite-proof and machine washable at 40 degrees. Four sizes: Choose from single, double, king or super king. 10.5 Tog Duck Feather & Down Duvet | Living Social