Kirschbaum Pro Line II 1.25 is a co-polyester tennis string designed for players seeking a balance of control, feel, and consistent performance. Its smooth, round monofilament construction provides predictable ball contact, while its relatively comfortable response makes it a more forgiving alternative to firmer polyester strings. The 1.25 mm gauge offers a versatile combination of precision, spin potential, and durability for players who take confident, full swings.
Intermediate to advanced players with medium-to-fast swing speeds who want reliable control without an excessively stiff feel. Well suited to aggressive baseliners and all-court players looking for a balanced polyester string with consistent feedback.
| String Type | Co-Polyester Monofilament |
| Gauge | 1.25 mm |
| Construction | Round Monofilament |
| Performance Focus | Control and Feel |