Yonex POLYTOUR Force Tennis String is a co-polyester that was designed with a softer string formulation for better ball pocketing, and most importantly, more power! The string has been exhaustively tested by Yonex ATP and WTA stars.

Construction: Co-polyester monofilament

Gauge: 16G / 1.30mm | 16L / 1.25mm | 17G / 1.20mm

Length: 39 ft