زه راکت یونکس Yonex PolyTour Fire 130 Tennis String (200m Reel) Red
-Impressive snapback and responsiveness from SIF technology (Silicone Infused Filament) -For players with medium-to-fast swing speeds looking for added power and spin -SIF technology is developed in cooperation with NANODAX
SIF
This new Silicone oil Infused Filament (SIF) technology--monofilament infused with Silicone oil--allows big hitters to experience ultimate spin from intense snapback speeds. Greater snapback produces a powerful spin. SIF Technology with unique pentagonal structure allows the string to move faster than conventional models, increasing spin.
