Color-match your Ultra V4 tennis racket with the beautiful and powerful ALU Power Ocean Blue tennis strings. This is the top string on tour for a reason – the aluminum present in the string enhances playability to go along with impressive power and control. 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. The 1.25 mm gauge is slightly thinner than the 1.30, which generates enhanced feel and control on each shot.

Top string on the Pro Tour – used by roughly 60% of top 100 players
100% Solar Power is an initiative that uses solar panels as the main energy supply to promote a sustainable, clean environment
Aluminum incorporated in the string provides superior power, control, and spin potential
Unique poly-ether composition exceeds quality standards and delivers near-zero string variance
Technology infused in the strings protects it from extreme atmospheric weather conditions such as moisture and heat
Two-color string compliments the Ultra v4 tennis racket collection