Black Knight 6350 MATCH PLAY feather shuttlecocks are made of premium quality DUCK feather to offer good flight and durability.
Product details:
xSPEED OF 77
Recommendation:
To prolong the durability of the shuttlecocks we highly recommend that all shuttlecocks be humidified 24-48 hours before usage. This will help increase the life/durability of the shuttlecock by up to 70-.