MAVIS 600 Fast Yonex precision MAVIS Nylon shuttlecocks are the closest you can get to traditional feathers. Designed to have the same flight time as a feather shuttle, they give an accurate and durable performance with a traditional feel. The hardness of the skirt – the feather part of the nylon shuttlecock – varies depending on temperature. Natural Cork GREEN CAP SLOW / 22ºC~33ºC BLUE CAP MEDIUM / 12ºC~23ºC RED CAP FAST / 0ºC~13ºC Speed Fast Color(s) Yellow Quantity 1 Tube / 6 Shuttlecocks Item Code M-600