Pack of 6 shuttles 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 Yonex manages product quality by categorising Mavis into 3 temperatures, please ensure that you choose the shuttlecock best suited to the playing environment Green cap – Slow speed - 22°C to 33°C Country of Origin: Japan