Head Material:Sandwich Cork Feather Material:Class B Goose Feather Weight (g):5.0 Product name:Goose Feather Badminton Shuttlecock Material:Nature Feather Color:White Feather:Class B Goose Feather Usage:Professional Tournament Level:Tournament Speed:75-76-77-78 OEM:Acceptable Packing:12 Pcs/ Doz MOQ:100 Dozs Show More