I hope the people at Nike tennis and/or Tennis Warehouse are reading these posts. Nike needs to bring the sphere hat back for good. Players would rather wear the sphere on court than the featherlight crap. There's a reason Nike pro's are wearing it instead of the featherlight.
I don't think Nike will reproduce these hats for the full production line. They should design new hats and give new hats to tennis pro players then new hats might sell better.
I tried the hat again during my play-off league match today. I don't know why I decided to wear charcoal 09 AO fed polo with the hat (bad decision:twisted: )
I did not expect 92 degree temperature ( I think ground of the court temperature reached around 100 degree).
Honestly featherlight hat is slightly better with high temperature. Featherlight hat material dries much quicker than sphere. If you put cold water during change over, featherlight hats are more cooler in my opinion.
I think isner's hat might not be perfect for everyone. I guess it's love or hate.
Fortunately, I like the hat though. It fits me well ^_^