The Yonex 10283EX Sleeveless Game Shirt is used by professional badminton players such as Lee Chong Wei, a legend in the badminton world. The shirt uses the latest technology to help players perform their best during their game. The shirt uses Yonex's VeryCool technology, a completely natural technology that absorbs heat and perspiration, providing a significant cooling effect during exercise. No matter what the ambient temperature, VeryCool lowers body heat by 3 degrees Celsius for cooler play. The Yonex 10283EX shirt also uses Polygiene biostatic fresh technology to inhibit and guard against the growth of odors from bacteria and fungi which makes the shirt stays fresh and hygienic.