Super-Soft Duvet: Get a 4.5 tog goose feather and down duvet. Comfort: Offers maximum comfort and softness to give you a peaceful sleep night after night. Sizes: Option of single, double, king or super king. Filling: Made of 85% goose feather and 15% goose down. Thread count: Encased in a 233-thread count cover that ensures durability and breathability. | 4.5 Tog Goose Feather & Down Duvet | Wowcher