KEVENZ 12-Pack Advanced Goose Feather Badminton Shuttlecocks,Nylon Feather Shuttlecocks High Speed Badminton Birdies Balls with Great Stability and Durability Sold: 12 Count badminton shuttlecocks, color is Yellow; Material: Advanced Nylon Feather 100% infrared selection of Nylon feathers quality, feather hair straight and thick, good strength, enhance the badminton resistance 100% test badminton rotation, to ensure that the badminton flight stability Nylon feathers are treated with special formula, smooth and soft The ball and sheep feathers are beautifully crafted Its head surface is firmly covered with coil and feathers, not easy to crack The ball head double filled with Imported large grain of wood Good elasticity, nice feeeling, no deformation, and much more durable Made of high-quality nylon material This ball is flexible to play with