What is the difference between down and synthetic material? First, let’s find out what they are. DOWN (of birds)  Is a layer of fine feathers found under the tougher exterior feathers. Down is a fine thermal insulator and padding, used in goods such as jackets, bedding (duvets), pillows and sleeping bags. The loose structure of down feathers traps air, which helps to insulate the bird against heat loss. For centuries, humans across the globe have used down feathers for insulation. As a conclusion, down is a 100% natural material that has been used for centuries by people to prevent heat loss and stay warm. Synthetic. Most of the time Polyester wadding (Synthepon), a synthetic material, is used anywhere where a down…