YONEX Polytour Pro 120 17G Polyester Tennis String Set - Flash Yellow, Spin-Focused Comfort

YONEX Polytour Pro 120 is a 17-gauge co-polyester monofilament tennis string that balances durability, added elasticity, and spin potential for players seeking control with a more comfortable poly feel.

Designed as an evolution of YONEX's Poly Tour family, the Polytour Pro 120 blends a unique polymer mix and an outer friction-reducing coating to give players improved ball pocketing, consistent repulsion, and enhanced spin compared with many traditional polyester strings. Its thinner 17 gauge increases comfort and spin potential, while temperature-controlled stretching during manufacture improves long-term tension stability and reduces fatigue on long sessions.

How does Polytour Pro 120 improve spin and control from the baseline?

The string’s exterior coating lowers inter-string friction so the ball can bite and snap off the stringbed more readily, producing extra rotation. Combined with the string’s construction and 17-gauge profile, this gives predictable bite and directional stability without sacrificing feel.

• Outer low-friction coating to enhance string movement and snapback
• Co-polyester construction tuned for controlled repulsion
• 17 gauge increases bite on the ball for more spin

Will this string feel comfortable and arm-friendly for extended play?

Polytour Pro 120 is formulated to offer a more forgiving response than many stiff polyesters. Its increased elasticity from a special polymer blend softens the impact and reduces shock transmission, making it a sensible choice for players who want poly durability without as harsh a feel.

• Unique polymer blend increases elasticity and shock absorption
• Thinner 17G profile adds comfort compared with thicker polys
• Manufactured under controlled temperature for consistent tension and reduced fatigue

How durable is the YONEX Polytour Pro 120 for frequent string breakers?

Although thinner gauges trade some absolute longevity for spin and feel, Polytour Pro 120 remains a durable, world-class co-poly monofilament. Its construction and controlled-stretch process provide reliable break resistance and stable playability over time.

• Co-polyester monofilament engineered for high durability
• Controlled-temperature stretching improves resiliency and lifespan
• Designed to maintain consistent repulsion during its usable life

How should I use this string to get the best performance?

Polytour Pro 120 suits a variety of stringing tensions and patterns: lower tensions increase comfort and dwell for big hitters, while higher tensions tighten control for precision players. It performs well in both single-string installations and hybrids—often paired with a softer multifilament for added comfort.

• Experiment with +/- 2 lbs from your usual tension to find preferred feel
• Try as main string in hybrids with a softer cross for added comfort
• Check tension periodically—controlled-stretching helps stability but natural loss occurs

Who is this for: YONEX Polytour Pro 120 is aimed at club players, tournament competitors, and advanced recreational players who want polyester durability with improved ball pocketing, spin generation, and a more forgiving touch. It’s particularly well suited to baseliners who rely on heavy topspin and players seeking a thinner poly option that reduces arm fatigue while still offering professional-level control.