Yonex PolyTour REV 17 / 1.20 Tennis String Purple1 Set - Control and SpinSilicone oil is infused deep into the polymers of the string, creating a smoother surface. Silicone Oil Infused Filament (SIF) technology reduces the friction between strings, resulti
Silicone oil is infused deep into the polymers of the string, creating a smoother surface. Silicone Oil Infused Filament (SIF) technology reduces the friction between strings, resulting in faster ball speed and improved spin. For baseliners with medium-to-fast swing speeds looking for a shaped string (8-sided) that grabs onto the ball for the ultimate spin experience.
PTGRV120PU
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