For those who search for the ultimate in comfort, Celcius now offers a range of natural goose down/feather products. Goose feathers and down are the most comfortable and durable filling material available for making of bedding products. Celcius feather products are manufactured using a very strict set of standards and the cleanliness is guaranteed by the International Down and Feather laboratories (IDFL) of USA. The Celcius Feather Duvet comes in a special down proof encasing to ensure that the product lasts longer without any loss of its unique features. The Feathers used in our Duvets are certified to be hypoallergenic and hyper clean by the IDFL. All our standard products are filled with 30% Down EU standard blend.