In general, pillows can be tough, soft and medium. The rigidity depends largely on the filler, which is used in a particular product. Modern pillows can be stuffed with a variety of materials, from buckwheat husk and ending with a technological holofiber. That is, materials can be used both natural and artificial. In the category of very good and just good pillow can translate the use of a classic natural pen and bird fluff. Puff pillows have always been a standard of softness. They are distinguished by the suppleness of the contents, the ability to take various shapes and splendor. The fluff easily takes the shape of the head of the lying person, and then it easily straightens. Used to stuff pillows, as a rule, feathers of waterfowl birds — ducks and geese. The latter is preferable, because it is more elastic and elastic, and also preserves heat better.