Tourna Black Zone Polyeser Tennis String

描述

TOURNA BIG HITTER Black Zone is a ultra-smooth co-poly crafted with the latest advancements in string materials. Heat Treatments strengthen the molecular bonding to keep the surface smooth. A smooth surface facilitates snap-back to generate more spin, power and feel. Smooth surface also makes it ideal for hybriding with softer nylon strings since it will not bite into the strings causing breakage.