Yonex Poly Tour Spin 125 is a shaped polyester tennis string designed for aggressive players who rely on topspin and precise shot placement. Its five-sided profile increases ball bite, helping generate spin while maintaining the controlled response expected from a firm polyester string. The 1.25 mm gauge offers a balance of spin potential, feel, and durability, making it a suitable choice for players who take full, confident swings.
Intermediate to advanced players with fast swing speeds who prioritize topspin and control. Particularly suited to aggressive baseliners who generate their own power and prefer a firm, direct string response.
| String Type | Polyester Monofilament |
| Gauge | 16L / 1.25 mm |
| Length | 39 ft / 12 m |
| Construction | 5-Sided (Pentagonal) |
| Performance Focus | Spin and Control |