... . Washed, dried and sterilized 3. Minimum odor and moisture 4. Good transparency and low oil & fat contents5. Hygienic: ... 1. washed white duck feather 2-4cm, 3-5cm, 4-6cm, 6-8cm2. washed grey duck feather 2-4cm, 3 ... -5cm, 4-6cm, 6-8cm1. washed white goose feather 2-4cm, 3-5cm, 4-6cm, 6-8cm2. washed grey ... goose feather 2-4cm, 3-5cm, 4-6cm, 6-8cm washed grey ...