Fake t-shirts?

It is a fake. From the YY trademark. Also, you are very good at spoting the 100% cutton part.

 

fake shirts and shorts are the easiest things to fake.

 

cooler:so..do u mean that ur second picture is a real yonex short...?

 

i believe YY's "Very Cool" is the same as the CoolMax patent.
i own both "very cool" and "coolmax" shirts. Coolmax products should be 100% polyester.

http://en.wikipedia.org/wiki/Coolmax

there should be no cotton in it.
what do u think cooler? , is coolmax = very cool?

 

no, both tags were from fake shorts.
My first photo just didn't capture the reflective yonex logo due to angle of the shot.
Both have glossy reflective logo at the top of the label tag

 

No, there aren't the same.

Coolmax is a dupont patented technology, based on its unique fabric weaving of regular polyester to wick moisture out. No chemical coating or UV protection involved.

since dupont own the technology, yonex can't copy it. Very Cool took a different path. Yonex use the cooling effect of Xylitol - a natural material that absorbs the heat of perspiration - Yonex Xylitol-impregnated Very Cool Polo Shirts lower body heat by 3 degrees during the heat of play according to yonex. In addition to the inherent cooling and soothing effect of Xylitol, Very Cool Polo Shirts have ultraviolet and infrared filtering functions which intercept 96% of UV radiation and 81% of IR radiation to suppress heat build-up in clothing during outdoor (or fluorescent, mercury lamps) sports activity. Very Cool's mesh material is better than ordinary polyester weaves but not the same as coolmax or dri-fit

Nike Dri-Fit use Honeycomb textured polyester fabric construction, and uses some spandex to improve stretching. It also UV protection.

As for Wilson, they trademarked 3 kinds of fabric technology: Hyper-Vent, Hyper-Move, and Hyper-Dry

 

Xylitol -> is this material (chemical)? will phrase out after washing and regular use over time?

 

xylitol is a natural sweetener that give a cooling effect (in gums).
I don't know how yonex impregnate xylitol into the polyester but i'm sure with harsh detergent and many washings, u will loose some xylitol. Xylitol doesnt cool continuously in my opinion, it's more like a physiological cooling agents. Only Cooler is cooler

 

It's knitting . Coolmax fibre doesn't depend on the weave or knit to have moisture wicking ability.

 

ive had some fella say about a unique serial number near the hem / side of the shirt, but 2 shirts i bought from a yonex authorised stockist, dont have this. Has anyone else heard this rumour?

does this mean that these are not genuine, and the shop is swindelling the prestige of calling itself an authorised distributor??