Kirschbaum Pro Line Evolution 17G (1.25mm) Tennis String

Pro Line Evolution is a pre stretched poly, therefore it holds tension a bit better. My normal setup is Solinco Revolution at 52lbs and that lasts me about 12-14 hours before it starts to become spongy and unplayable. So far with Evolution I am getting about 18-20 hours of very solid playability. The string is also a bit more powerful too than most polys I have tried. Definitely worth a try if you’re looking for a tad bit more pop on your shots and a fan of poly.