Considered by many to be the crem da la crem of polyesters. Used by so many professionals, it is THE standard of top tier polyester tennis strings. So many people consider this to have the perfect amount of stiffness and power. It also loses playability THE FASTEST. Average playability is around 1-4 hours (depending on how hard you hit the ball). Which kind of explains why pros will change racquets every 7 games because they’ve hit the life out of these strings in only 7 games. They can also pay to restring their racquets every time they hit. A full bed of ALU power is not for the faint of heart or tender of joints. However once that tendonitis sets in, they know the exact feeling of ALU power. It is a sweet drug that has left many tennis players in remission for life.

For a softer, more comfortable feel, you can hybrid with a black PEEK in the crosses to give you a more gut-like comfort without losing ANY of the ability to spin the ball