YONEX MAVIS 300 BADMINTON SHUTTLECOCKS X 6 tube White (RED = Fast Speed) World Wide No. 1 synthetic shuttle – with superior CORK BASE construction. When smashed, a MAVIS shuttlecock recovers in only 0.02 seconds. This performance is just 0.005 seconds slower than a YONEX Feather shuttlecock and 0.008 seconds faster than the recovery of an ordinary shuttlecock.