Soft: Inside an anti-allergenic 100% cambric cover. Duvet: Get a 13.5 tog winter duvet. Goose feathers: Filled with shredded goose feathers and down. Anti-allergenic: Feathers are steam treated before being used. Luxuriously plump: Perfect for wrapping up warm this winter! Four sizes: Choose from single, double, king or super king sizes. | 13.5 Tog Shredded Goose Feather & Down Duvet | Wowcher