Head Material:Sandwich Cork Feather Material:Class A Goose Feather Weight (g):5.0 Product name:DELO Goose Feather Badminton Shuttlecock Material:Nature Feather Color:Pure White Feather:Class A Goose Feather Usage:Professional Tournament Level:Tournament Speed:75 76 77 78 OEM:Accept Packing:12 Pcs Doz MOQ:100 Dozens