Duvet: Get a 13.5 tog duck feather and down duvet. Comfortable: Maintains an even spread of the duck feathers to eliminate cold spots and allows for it to drape around the body. Filling: Made with 85% natural soft white duck feather and 15% down. Sizes: Option of single, double, king or super king. Quality: Designed with 233 thread count soft brushed micro fibre fabric and finished with pocket baffle stitching. 13.5 Tog Duck Feather & Down Duvet | White | Living Social