Velvet size

(1) The duck (goose) down that has been cultivated for more than one year is about 100 to 150 per 0.1 gram.

(2) The duck (goose) down that is cultivated for 6 to 8 months is about 200 to 230 per 0.1 gram.

(3) Each 0.1 g of duck (goose) down cultured for more than 60 days is about 320 to 360.

(4) The duck (goose) down cultured for more than 35 days is about 400 to 460 per 0.1 g.

(5) Duck (goose) down for about 28 days is about 550 to 620 per 0.1 gram.