Precision Meets Comfort: String Project Hexa Pro Green Review

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String Project Hexa Pro Green 125


String Project Hexa Pro Green is a shaped co-polyester designed for players who crave spin, feel, and control in one package. Made in Italy, this string blends soft polyester and high-density co-poly materials treated with alpha-olefin, producing a crisp, connected response that’s surprisingly easy on the arm.

It’s aimed at modern baseliners who like to attack with spin but don’t want the stiffness or harsh feedback often found in traditional control polys. In testing, Hexa Pro stood out for its combination of precision, comfort, and tension reliability — a string that feels alive but never out of control.

Quick verdict

String Project Hexa Pro Green delivers a perfect mix of spin and comfort. The hexagonal profile grips the ball beautifully, while its softer co-poly composition gives it a smooth, forgiving feel through contact. It’s fast through the air, consistent across sessions, and arm-friendly even after hours of play.

For players seeking spin and control with reduced fatigue, Hexa Pro is a genuine hidden gem from String Project’s lineup — premium performance without the stiffness.

What the numbers and lab tests say

String Project Hexa Pro Green – Based on independent test data:

String Project Hexa Pro — Indicative Performance Scores

Spin95
Control90
Power85
Comfort80
Elasticity75
Tension Holding85
Durability80
Stability90

Gauge referenced: 1.20mm • Shaped (hex) co-poly

👉 In short: String Project Hexa Pro plays like a refined blend of control and comfort, with the responsiveness of a tour-level poly but less strain on the arm.

How it plays (feel, spin, power, control)

On court, String Project Hexa Pro Green immediately impresses with its predictable control and smooth feedback. The hexagonal shape bites into the ball, producing effortless topspin on heavy groundstrokes and strong bite on kick serves.

Despite being a shaped string, it doesn’t feel harsh — the ball pocketing is clean, and there’s a satisfying sense of “grab and release.” Power is moderate but easy to access, especially for players with fast racquet head speed. From the baseline, shots dip predictably, while at net it offers crisp feel and reliable placement.

The stringbed feels lively without becoming uncontrollable, making it suitable for a wide range of frames from power racquets to control-oriented setups.

String Project Hexa Pro – Pros & Cons

String Project Hexa Pro – Here’s a quick pros and cons snapshot:

✅ Pros ⚠️ Cons
  • Excellent spin potential with heavy bite from the hexagonal shape
  • Strong control and directional accuracy at high swing speeds
  • More arm-friendly than most shaped spin polys
  • Predictable launch angle with reliable snap-back
  • Good balance of power and control for aggressive baseliners
  • Solid tension maintenance for a thin (1.20mm) shaped co-poly
  • Consistent, stable response over multiple sessions
  • Not as soft or plush as a poly/multi or gut hybrid
  • Thin gauge means durability may be limited for frequent string breakers
  • Power is controlled, not explosive — players seeking free pace may want more
  • Requires full swings to unlock its best performance
  • Touch players may prefer a string with longer dwell time

Durability & tension maintenance

String Project Hexa Pro Green
Hexa Pro performs admirably in both tension retention and longevity

Hexa Pro performs admirably in both tension retention and longevity. You can expect around 10–12 hours of consistent play before the feel starts to fade. It resists notching fairly well and maintains its spin potential over multiple sessions.

👉 Overall: A dependable, versatile poly that keeps its feel and spin long after similar strings would have gone dull. See my guide here on choosing the right tennis string tension.

Who it suits

Best For:

  • Intermediate to advanced baseliners seeking spin with added comfort
  • Players who prefer softer polys that remain responsive and arm-friendly
  • Those transitioning from multifilament or hybrid setups

Not For:

  • Players needing maximum power with minimal effort
  • Heavy string breakers (consider the 1.30mm version)
  • Those preferring ultra-firm, dead-feeling polys

Best suited racquets

String Project Hexa Pro pairs well with racquets that benefit from added control and bite:

  • Yonex Ezone 100 / 98 – adds control and comfort to power-driven frames
  • Wilson Blade 98 – enhances spin and predictability
  • Head Speed MP / Radical MP – balances out stiffness and improves feel
  • Babolat Pure Strike – offers a softer, more connected feel without losing feedback

Comparable strings

Players who like String Project Hexa Pro might also enjoy:

  • Solinco Hyper-G Soft – similar comfort and spin, slightly firmer feel
  • Head Lynx Tour – firmer and crisper with more control but less comfort
  • Grapplesnake Tour M8 – better bite and control, less forgiving on mishits
  • Tecnifibre Razor Soft – smoother and more powerful, slightly less spin

Practible recommendations

Tension: Start between 21–23 kg for balanced performance. Lower for comfort, higher for control.

Gauge Choice: 1.20mm gives ideal spin and feel; choose 1.25mm for added durability.

Hybrid Setup: Works beautifully with a soft cross (e.g., synthetic gut or multifilament) to boost comfort further.

Restringing Frequency: Every 10–12 hours of play for consistent feel and tension.

I hope this review helped you understand what String Project Hexa Pro Green is, who it works for, and what to expect from it over time. If you want to know if Hexa Pro (or another string) is right for your game or if you’re ready to book a restring, just send us a message via chat!

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AUTHOR

My name is Chris and I’m the founder of Prostrung. I’m an ERSA Pro Stringer and British tennis player based in London.

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