Material: The shuttlecocks are likely crafted from high-quality synthetic leather to balance durability and feel, suitable for both professional training and repetitive practice.
Size and Weight: The shuttles may weigh between 3 grams to match standard badminton sizes, ensuring comfort and control for players of varying skill levels.
Construction: The handles are probably made from durable materials such as metal or high-quality plastic, providing a secure grip and enhancing player control.
Special Features: The set might include a variety of sizes or shapes to accommodate different training exercises, helping players refine specific skills like smacking or volleys.
Durability: Given the professional use intended, these shuttlecocks should be weather-resistant, possibly using water-repellent fabrics in their strings, to withstand rainy conditions and humidity.