If you want to WIN, you need to use SPIN. The RPM Rough tennis string gives you great spin. You can actually feel the string texture. And the texture gives every stroke more bite. No wonder this string is used by the world's best players, including Félix Auger-Aliassime. Made in France.

Your racquet's strings are its driving force. In fact, they account for half its performance. In other words, you need to choose carefully. 

Gauge: 1.25mm