Yonex Poly Tour Fire Black Cut 12 m

Fire is a monofilament polyester for tournament players with a fast swing who attack and want the ball to leave the strings quickly. The SIF silicone (Silicone Oil Infused Filament) sits inside the polymer itself: the strings slide on contact and snap straight back, and that Snapback adds pace and spin.

The smooth round profile gives a consistent launch on flat and topspin drives. Heat treatment slows tension loss over time, and the string stands up to heavy friction. 12 m set, 1.25 mm gauge.