... Down(WGD) and Grey Goose Down(GGD),Duck Down inclued: White Duck Down(WDD) and Grey Duck Down(GDD).Goose Down quality is better ... than Duck Down, lighter and warmer, so price higher ... down: Generally, we say 75% WDD means 75% white duck down plus 25% white duck feather. down comforter:supplying to USA (Target, Wal-mart ...