Very good product considering the price point. Generally stays grippy little longer than other overgrips I have used.

I was looking for something that would keep its tackiness for more than two rounds on the court. These definitely fit the bill though the first couple times playing, I start getting a callus almost to the point of a blister. So far, these have last the longest so Im planning on sticking with them until I find something better.

The Gamma Razor Tac is the best grip for hot humid weather, I play tennis 3 times a week in Central Florida, humidity central and this is the only grip I have tried that retains its sticky feeling and you do not lose your grip on the racket handle. If you have been losing your grip on the handle of your racket due to wet grips give this product a try.