Do you want a string that combines comfort, durability and power? Discover AddiXion +, a strong, dynamic string that provides long hours of play and helps you gain more power, while dampening vibrations. Because the strings are your racquet's driving force, it's also important to choose your strings carefully. We invented tennis strings in 1875, and we've been innovating ever since, so you can play your best game of tennis and enjoy it more than ever. FEATURES: COMFORT The multifilament structure and soft polyamide material make AddiXion+ tennis strings extremely comfortable to play with, protecting your arm from vibrations. DURABILITY The added fibers make AddiXion+ even stronger, giving you up to 25% more playing time*. This is the ideal solution for players who break multifilament strings too frequently.* Tests performed on 130 gauge string. POWER: Slightly firmer than Xcel tennis string, Addixion+ retains the elasticity of multifilament string, for dynamic ball response and a quality feel. Addixion+ helps players hit longer, more powerful shots with ease.. String Type: Multi Filaments Length: 12 m / 472 in Composition: Polyamide