For me, the Yonex AC102 grip lasts me quite a long time, a few months perhaps. For the first few hours, the grip is tacky, but then it becomes soft and feels almost cloth-like. Usually, I change it when the grip really starts to rip a lot or is just very old and dirty.
However, I live in a climate which is not too hot, so I don't get super sweaty hands.
However, I live in a climate which is not too hot, so I don't get super sweaty hands.