... odor and low moisture As filling materials of quilts, pillows, mattress toppers, cushions, sofas and so on. 1. Less sharp and ... , 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 ...