Four sizes: Valid in single, double, king or super king size. Hypoallergenic: Made with 100% superfine hollowfibre filling. Easy care: Machine washable and can be tumble dried on a low heat setting. Bedding: Get a 16.5 tog winter duvet. Stitching: Inner is channel-stitched hollowfibre. Comfortable: Perfect for a great night's sleep. 16.5 Tog Winter Duvet | Living Social