A Shuttlecock shall have 16 feathers fixed in a cork base covered in kid leather. Interestingly, the best Badminton Shuttlecocks are made from feathers from the left wing of a goose.Shuttles are usually graded according to speed. If you have reached a certain level and can hit from baseline to baseline, use standard speed shuttlecocks. If your strength is not there yet, you can use shuttlecocks of a slightly faster speed.You will enjoy the game more if you can send the shuttles to the baseline.