HEAD Sonic Pro ™ 17G White Tennis Strings

The HEAD Sonic Pro 17G (1.25 mm) in White is a high-value, arm-friendly co-polyester monofilament designed for intermediate to advanced players who want the precision and durability of a polyester string without the harsh, stiff feel of traditional monofilaments. Finished in a clean White cosmetic, it brings a classic, polished look to any racquet setup while delivering a slightly livelier launch compared to darker dyed polyesters.

The 17 Gauge (1.25 mm) profile maximizes string-bed elasticity, providing enhanced tactile responsiveness, better ball pocketing, and more crisp pop than thicker 16G variants.

Performance Profile

1. Arm Comfort & Vibration Isolation (8.5/10): Superior for a monofilament. Formulated with a soft co-polymer molecular structure that dampens off-center impact shock, making it one of the most joint-friendly polyesters available.
2. Control & Predictability (9.0/10): High. Offers a consistent, low-powered string bed response that allows big hitters to swing aggressively while keeping the ball within the lines.
3. Power & Depth (8.0/10): Lively for a co-poly. Returns energy efficiently on full swings, aiding depth generation more effectively than traditional dead control polyesters like Luxilon Alu Power.
4. Durability & Surface Wear (9.0/10): Excellent. The smooth round monofilament surface resists friction notching, preserving string bed life and snap-back efficiency over long hitting sessions.

Key Technologies

1. Soft Molecular Co-Polymer Blend: Engineered polyester formulation designed to soften impact shock while retaining high directional control.
2. Smooth Round Profile: Minimizes inter-string friction, allowing main strings to slide and snap back smoothly for reliable topspin and reduced surface wear.
3. 17G (1.25 mm) Gauge: Provides crisp ball feedback and increased string-bed flex over thicker 16G (1.30 mm) options.

Best Suited For

1. Players Transitioning to Polyester: Intermediate and club players moving away from multifilaments or synthetic guts who need control without punishing their arms.
2. Arm-Conscious Hitters: Competitors seeking a comfortable, low-vibration monofilament to reduce wrist, elbow, or shoulder fatigue.
3. Clean Cosmetic Matching: The bright White finish pairs cleanly with white, black, or bold multi-color frame designs (such as HEAD Speed, Prestige, Boom, or Radical series).

Specifications

• Color: White.
• String Model: HEAD Sonic Pro ™.
• String Type: Soft Co-Polyester Monofilament.
• Gauge: 17 Gauge / 1.25 mm.
• Profile / Shape: Smooth Round.
• Packaging Options: 40 ft (12.2 m) Single Set / 660 ft (200 m) Reel.
• Primary Benefit: Control, Arm Comfort, & Durable Pop.