5% Down Feather, 95% Back Feather Filling 1000g 100% Cotton Fabric - Clara Pillow, with its zippered pillowcase, provides ease of washing unlike other goose down pillows. Goose down is the healthiest and most comfortable filling in the world. Its heat insulation is 2.5 times higher than other fillings. Its hygroscopic feature traps ambient moisture, preventing sweating. Suitable for side and back sleeping. WASHING INSTRUCTIONS: Can be washed at 30°C. Do not use bleach. Don t iron. Important Note: If you do not have a dryer, never wash. In this case, dry cleaning is recommended. The pillowcase can be washed as often as desired.