If you have down jacket or down coat and carefully read what is written on the label, you may notice that the filling is composed of two components: down and feather.
Most often, this proportion varies from 70% down 30% feather to 80% down and 20% feather. You can ask: “Isn’t it better to make the jacket of 100% down filling?”. Of course, if one is going to wear it in winter, and if it is covered with delicate material, it is possible.
Normally, down jackets and coats that should keep you warm, are filled with down and feather mixture of 80% down and 20% small feathers. And it is not because of the desire to make products cheaper. The main reason is that the central hard core let the filling to keep the form.