ONE Tube of Genuine Yonex Nylon Shuttlecocks, MAVIS-600, Made In Japan * 6 Pieces in one tube. * Colours Available – White or Yellow Skirts * Speed Available – (1) Middle speed – Blue Cap (12 – 23 Degrees C); (2) Fast speed – Red Cap (0 – 13 Degrees C) * Developed based on the flight timing of feather shuttlecocks, MAVIS Nylon Shuttlecocks are precision designed and manufactured to provide accurate flight performance. For example, after the smash, MAVIS recovers in only 0.020 sec. This performance is just 0.05 sec. off the 0.015 sec. recovery of a YONEX Feather Shuttlecock and 0.08 sec. faster than the 0.028 sec recovery of an ordinary shuttlecock. * The flight performance is consistently accurate. * Ultimate Durability. * The combination of close-to-feather shuttlecock flight performance and four to five times more durability than an ordinary nylon shuttlecock, makes the YONEX MAVIS series the most cost effective choice for practice sessions. * Patented WING RIB design utilises air flow through the shuttlecock to restore shape quickly on impact. Based on flight dynamics, this original design grants stable flight, contary to conventional models that restore shape via stiff construction.