1. Single-side feather The outmost feather in the wing. Durability is the main feature of this feather, such as Durable No. 1 as below. 2. Humped feather The second feather from outside to inside in the wing. Its durability is merely worse than single-side feather, such as L-101 as below. 3. Small-board, middle-board, big-board feathers The third, fourth and fifth feathers from outside to inside in the wing. Its flight increases in turn, used for club cometition, such as L-06, L-07, L-08 as below. 4. All-round feather The 6th-10th feathers from outside to inside in the wing. It's the best feathers and used for high-level tournament, such as L-09, L-10 as below. 5. Curving feather The innermost feathers in the wing. Since it's thin and curving and has to be straightened before making shuttles.