1、Suitable for competition, training, recreation and entertainment, etc. 2、Bright color and cool design. Excellent stability performance, high quality duck feather also provide great durability. 3、Adopts quality cork head, resistant to hitting, not easy to break, enduring for long life time. 4、The feather hair is straight and thick, good strength, enhance the badminton resistance. 5、Perfect for beginners and amateurs training. Features: Suitable for competition, training, recreation and entertainment, etc. Bright color and cool design. Excellent stability performance, high quality duck feather also provide great durability. Adopts quality cork head, resistant to hitting, not easy to break, enduring for long life time. The feather hair is straight and thick, good strength, enhance the badminton resistance. Perfect for beginners and amateurs training. Specification: Item Type: Badminton Ball Model: M7 Material: Duck Feather + Cork Head Color: White Speed Rating: 76-77 Rotation Speed: 350-420 Quantity: 12 PCS Weight: Approx. 173.8 g Packing List: 12 x Badminton Ball (1 box) Note: In order to improve the service life of the badminton in the low temperature or dry climate, you can increase the humidity of the feathers by some water vapor before playing, but do not spray some hot water to the feather pieces.