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Top 5 Arm Friendly Poly Strings!

Posted on May 21, 2014 in Strings

Tennis Warehouse has a string performance tool that allows players to evaluate strings based on their stiffness level, which is the key spec for determining how arm friendly a string is likely to feel. The tool’s data is culled from a machine constructed by the authors of “The Physics and the Technology of Tennis,” Crawford Lindsey (“TWU Professor”) and Rod Cross, physicist from the University of Australia. Using this tool, I have assembled the following lists for the player in search of a more arm friendly control string. I have limited my focus to poly-based monofilaments.

Softest Round Polys



  1. Polyfibre TCS
  2. Isospeed Pulse
  3. Head Sonic Pro
  4. Topspin Cyber Flash
  5. Yonex Poly Tour Pro

Softest Shaped Polys



  1. Polyfibre Hexablade
  2. Tourna Big Hitter Black 7
  3. Volkl V Torque
  4. Solinco Tour Bite Soft
  5. Dunlop Black Widow

Softest Twisted Polys



  1. Gosen Sidewinder
  2. Volkl Cyclone Tour
  3. Ytex Quadro Twist
  4. Gamma Zo Twist
  5. MSV Hepta Twist




*Please note: poly-based strings are generally stiffer than their nylon and natural gut counterparts. The strings above should not be considered arm-friendly compared to these softer material classes, rather, they should be considered more arm friendly than their poly-based peers. Finally, while lab data is useful and should be used as one part of your evaluation, your on-court experience may not always cohere with lab results. Let your arm be the final judge.



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