Depends It all depends. When I wear 100% polyester outdoors, it is fine. Eg. when I golf, I dislike having anything in my way when I swing. In this case, poly is great as it doesn't stick to our skin. Cotton is great and comfortable, but it sticks. Therefore, not suitable for sports like golf. I agree cotton is still the best when it comes to sports like badminton. I would say 50% cotton, 50% polyester for a shirt is great.
Just to add on to Ar Dan, Not all Yonex VeryCools are made in Japan, unless it was a Japanese model. I have one which is made in Vietnam which I purchased at a local store in Canada.
Good question. I'm am not sure if it is still on the forums unless it was archieved but there was a thread which brought covered this may answer your question as it did how pictures of shirts with fabric comparisions between the different makes.
I use Adidas ClimaCool, and it works very well. I tried Nike Drifit, and it felt too warm for some reason.
