Tru Cool 
This Yonex product is manufactured using TruCOOL technology incorporating micro polyster fabric with moisture management property 
The Trucool fabric has wicking property and helps to disperse the moisture away from the skin into the atmosphere, thus keeping you dry, cool and comfortable. 
Air micro mesh light fit and enhanced stretch the material in our clothing that provides high stretch has been made even lighter, allowing for a comfortable fit and smoother movemeT 
Smoother arm movement when in action affording a 165-degree range of motion in the sleeve, our shirts boast less restriction and free movement 
Back Pocket.