Yonex Poly Tour Rev White Tennis String

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. Intense bite and control from SIF technology. For baseliners with medium-to-fast swing speeds looking for a shaped string that grabs the ball for the ultimate spin experience Material: Polyester (Monofilament) Gauge: 16/1.30mm , 16L/1.25mm , 17/1.20mm Color: White Advantage: Durable, world-class string with a comfortable feel to reduce player fatigue. Made in Japan