This shuttlecock is made of feather and iron material for durable use. It can be kick in many different ways. Kicking shuttlecock for a long term can help you ecercise leg muscle strength and body flexibility. It is suitable for school activities and adult training. Features - Color: White. - Material: Feather, steel. - Size: 4 x 4 x 12.5 cm. - Made of premium feather and iron material, the shuttlecock is durable and can be played for a long time. - Kick a variety of ways, both than the number of times, you can even than the time to kick, but also than the pattern of kicking. - Kicking shuttlecock for a long term will got a good effect, it can ecercise leg muscle strength and body flexibility. - It is suitable for indoor and outdoor playing, especially for the school fitness sports activities. - It is a good choice as a gift for your friends or families, if he likes kicking shuttlecock.