Yonex Poly Tour Air is a co-polymer monofilament with an elastic HR polymer additive. The result is a control string with impressive shock-absorption. In fact, this is the softest poly-based string we've tested by Yonex. This string also has great snapback for added ball rotation. Big hitters looking for a control string with above average comfort should love this one. 

• Arm-friendly and shock-absorbing from HR-Elastomer for effortless power
• For players with slow-to-medium swing speeds looking for a comfortable string

Product Description  

• Yonex Polytour Air 125 Tennis String
• Plushy “HR-Elastomer” built into the string enhances shock-resistance and repulsion. This allows players to hit powerful shots while reducing the impact on one’s arm.
• Color: Sky Blue
• Material: Polyester (Monofilament), HR-Elastomer
• Gauge: 16L (1.25 mm)
• Length: 39 ft / 12M 
• Made in Japan