Longlasting performance The badminton humidifier cover increases shuttlecock durability by 50%, enabling longer play between replacements. Technology advantage Uses advanced scale atomization to evenly moisten feathers for stable performance during intense matches. Quick and simple usage Designed for efficiency, it takes about 8 seconds to use and features a TypeC charging port for easy recharging anytime. Compact size for ease of use Size 5x3.8 cm (2.63x1.33 in); lightweight and portable, it fits easily in a bag or shuttlecock container for onthego use. Use scenarios Tournament play: Keep shuttlecocks performing consistently through long rounds by maintaining feather moisture, reducing the need for frequent replacements. Practice sessions: Maintain stable feather moisture during intensity drills to ensure predictable flight and feel. Travel or club days: The compact, portable design lets you carry it in a bag or shuttlecock container for quick onsite refreshing. Specifications Size: 5x3.8 cm (2.63x1.33 in) Humidification method: scale atomization (even moisture distribution) Charging: TypeC port Function: humidifier cover for shuttlecocks Performance: increases shuttlecock durability by 50%