Players with long, fast strokes should love YonexPoly Tour Fire Tennis String Reelaround polyester monofilament that will keep your biggest strokes inside the lines.Best tennis strings reel for professional players and your sports clubs. The feel is firm but nicely dampened, with a surprisingly low level of shock on off-center hits. Yonex has made this string with its unique Silicone Oil Infused Filament (SIF) Technology.

This is a manufacturing process that reduces stringbed friction, enabling the strings to snap back with vicious force (resulting in heavy spin). Tension maintenance is above average.