Look and Feel Down is the soft undercoating of  geese and ducks. It consists of clusters of light, fluffy filaments growing from a central quill point. Feathers are the outer growth of birds. Feathers consist of a hard quill shaft (or stem) with a series of fibres extending from each side.  Loft Loft  is a measure of the fluffiness of down and is also a great indicator of its overall quality. The loft measurement is not used for feather. Duvet Warmth and Weight Down is the best insulator per ounce over any other fill, natural or man-made. Down provides much more warmth per ounce than feathers. For this reason, feather duvets contain significantly more fill and are heavier than down duvets. They require more fill to achieve the same level of insulation and warmth. Pillow Support Down provides minimal head and neck support in pillows. Pillows containing feather provide more resilient support and firmness due to the springy feather quills/stems. Scarcity and Price Down is more expensive than feathers. Due to its luxurious feel and excellent insulating properties, down is more prized than feathers by consumers. Down is also scarcer – each bird yields much more feather than it does down. Click here to read the full article about down vs feather.