Smash Hit-22 Nylon Shuttle Cock | Badminton Shuttlecock (2 Set) Feather Material - Nylon Feather. Nylon feathers offer durability after repeated hits over the net Cork Material - Composite Cork. Good elasticity, good hitting and durability, not easy to crack, to provide stability in flight. Speed: Medium - speed. Strauss shuttlecocks help you build hand-eye coordination. The ball head is a little bit heavy, so the speed is faster. Suitable for Family Fun, Training, Leisure and Entertainment. You can play them with your families, friends or classmates to not only exercise your bodies but also promote friendship among you. IN-BOX CONTENTS: Pack of 2 Smash Hit-22 Nylon Shuttle Cock