Yonex Poly Tour Fire tennis string is designed for players with medium-to-fast swing speeds looking for added power and spin. 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. *SIF technology is developed in cooperation with NANODAX

• 100% Monofilament
• Impressive snapback and responsiveness from SIF technology (Silicone Infused Filament)
• Color(s): Red
• Gauge(s): 16 (1.30 mm), 16L (1.25 mm), 17 (1.20 mm)
• Length: 1 Set = 12 meters / 39 feet
• Material: Polyester (Monofilament)