The Yonex Mavis 2000 shuttlecocks are five times more durable than an average nylon shuttlecock. They have a flight performance that imitates a feather shuttlecock thanks to the innovative Wing Rib technology. The shuttlecocks are perfect for tournament & practice play for the club players. They recover in only 0.02 seconds & are precision designed & manufactured to provide an accurate flight performance. The shuttlecocks are supplied as a 1 dozen pack.