The Yonex Mavis 10 Shuttlecocks is a recreation synthetic shuttle with the attributes of the higher grade Yonex nylon shuttlecocks. This rubber base shuttle is a must for the entry level player who demands quality and durability. They closely approximate the fast recovery peak and drop and flight trajectory of feather shuttlecocks.Colour: WhiteSpeed: Medium.Tubes of 6.Range of temperature - 12°C - 23°C. Players should always use the shuttlecocks best suited to the playing environment. (Shuttlecocks should be stored away from high temperatures and the tube kept upright with the cork side of the shuttlecock facing down).