Wilson NXT Comfort 16 Black Tennis String Set Gender_Men's Roger Federer uses this string

Roger Federer uses this string as a hybrid with natural gut

Features Textured version of 4G provides greater spin potential and more string flex for softer feel

and has a generous fit

Features highly elastic nylon core with new outer metallic ribbons for enhanced comfort and durability

The contrast panels near the hem are two-tone

Wilson NXT Comfort 16 Black Tennis String Set Gender_Men's Roger Federer uses this stringFeaturing proprietary Xycro Micro Fibers impregnated with PU for enhanced comfort and power, NXT is the world's most popular multifilament string. Sporting a larger sweet spot than traditional synthetic gut string and a fraction of its shock, NXT has stood the test of time for good reason. For installation, handly gently and avoid over clamping and crimping. Features 35% PU by volume X bonded core increases tension maintenance and power 10% larger