Dmantis Mode D75 3 in1 Shuttlecock is made by 3 parts: Fiber Cork+Class A Duck Feather+ Modified nylon feather stand. Advanced Duck Feather The original ecology short feather and thicker shaft increase the resistance of feathers, providing stability performance. High Quality Fiber Cork .Compound softwood cork gives the best elasticity. Highly hitting and durability makes the ball not easy to crack and can ensure flight robustness . Thickened Feather Stand Modified nylon material and one-off glue filling makes the cork and feather more stable and durable. This ball is closer to the traditional ball, and its speed can reach 79. 12 shuttlecocks are packed in a great tube ,Total 60 shuttlecocks are packed in 5 great tubes. Reasonable tube design, storage and protection guarantees that the shuttlecocks will not be damaged during transportation.