Goose down of European origin with fill power 600 cui /oz (measured by the European standard).  Is is being used mainly for sleeping bags and cothing where the main criteria is the ratio between warmth and price , and where weight is not the major issue. The down is veterinary tested and its qualities are verified by IDFB certificate (IDFB = International Down and Feather Bureau). Goose down is 100% natural, 100% recyclable, easily biodegradable.