Down bedding is among the most comfortable and warmest of all bedding. It is made with down, a layer of fine feathers found under the tougher exterior feathers of some species of birds, especially geese. Down is an excellent thermal insulator and padding, used in many products including jackets, Comforters, and pillows. The loose structure of down feathers traps air and that helps to insulate birds against the cold, and it’s also what gives down bedding its comfort and warmth.Down pillows also come in a variety of comfort levels including soft, medium and firm. Featherbeds are down feather filled and are used to make your bed even more comfortable. Blanket Warehouse has many styles and sizes including California King to choose from.