These badminton shuttlecocks are designed for both beginners and professionals. Made with selected robust feather bones and high-quality wear-resistant coil, these shuttlecocks offer fast speed and good wind resistance. They are suitable for indoor and outdoor use, making them perfect for community centers and sports clubs. Features: Selected Feathers: Thick and densely fibred feathers ensure a stable flight and ultimate control shot. Advanced Inorganic Glue: The strong shaping effect ensures the frame is not easy to disperse. High-Quality Wear-Resistant Coil: The coil is compact and firm, offering excellent toughness. Robust Feather Bones: Sturdy and durable, these shuttlecocks are not easy to break. Cork Ball Head: Made from quality cork synthetic material, these shuttlecocks are durable and wind-resistant. Specifications: Material: Feather, Inorganic Glue, Cork Color: White Size: 8.7x6.6cm/3.4x2.6in Weight: 5g/0.18oz Package List: 12 x Badminton Shuttlecocks