According to Wilson, this string is used by around 60% of the top 100 tennis players in the world... check out the Luxilon Alu Power 125 Silver Tennis String Set!

Manufactured to provide superior power, control, and spin potential, this string contains Luxilon's unique poly-ether-ether material and it's also absolutely impervious to atmospheric conditions (like moisture).

This is an awesome limited edition 17 gauge tennis string made from polyester, if you're looking for power, you've found it.

Luxilon Alu Power 125 Black Tennis String Set

Now available in a limited edition black coating, ALU Power is the top string on tour for a reason - the aluminum present in the string enhances playability to go along with an impressive blend of power and control for advanced players. Its unique poly-ether-ether composition exceeds all quality standards for near-zero string variance. Completely impervious to atmospheric conditions such as moisture, ALU Power delivers unrivaled consistent performance for championship-worthy results.