YONEX Poly Tour Rev 17 (1.20mm) Tennis String 12m Set – Mint

• Intense bite and control from SIF technology* (Silicone Infused Filament)

• 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.

Athletes:

Madison Keys, Emma Navarro, Marcos Giron.

Technology:

1. SIF

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.