Yonex Mavis 350 is the official nylon shuttlecock used for training and tournament play for many school teams across the USA. It is also used by many European countries for their schools and junior national training.
A top quality nylon shuttlecock, the Mavis 350 has the closest performance to feather shuttlecock in flight and feel. Though it cannot totally mimick feather shuttlecock, it is close enough for high school and junior national to use for play, practice, and club matches or tournaments.
Sleeve of 6.