This 33 oz (924 grams) is entirely made of Hutterite duck down. Hutterite ducks are raised outdoors and so an exceptional quality of down can be obtained. Thanks to the good living conditions of these birds, the Hutterite duck down inside this duvet gives an exceptional loft power. Hutterite duck down is one of the best downs in the world. Another asset of the Hutterite duck down is its thermoregulation. Down will retain the heat produced by your body and at the same time, it will be diffused among your duvet. A proper 330 thread count guarantees an efficient air exchange. The 2 " gusset that edges the whole duvet is a latest innovation. Baffle box construction allows an homogeneous distribution of the down in the duvet. All duvets available at Luxury Duvet come with a certificated down. You will find several tags attached to your duvet, such as: the ultra-fresh treated tag, a Feather Industries tag that assures you the content is only real canadian down. An official label of the Down Association of Canada is a proof that your duvet has been manufactured by one of its members. The Ultra-fresh  tag guarantees that feathers or down inside your duvet have received a rigorous anti-microbe treatment  that prevents growth of bacteria and acari, among others. The feather industries tag reports the batch number of the down that fills your duvet, so that we are able to track the product filling.