Yonex Poly Tour Fire - String Set Gauge:125 Alu Power is a co-polymer

Alu Power is a co-polymer composition

“StayDry” wicking microfiber

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Material Composition: Co-Polyester

Yonex Poly Tour Fire - String Set Gauge:125 Alu Power is a co-polymerPolyTour Fire is a string that is designed for big hitters looking for lots of control, spin potential and durability. Not surprising, being a firm monofilament polyester, that PolyTour Fire offers plenty of control. However, it still provides a surprising amount of feel and does not transmit too much shock and vibration, even on balls struck outside of the sweetspot. Yonex uses its Silicone Oil Infused Filament (SIF) process to manufacture this