Round Profile. Elite Spin.

A5 is one of Toroline’s premium co-poly constructions, engineered for players who demand precision, stability, and explosive spin from a clean round profile.

Built with a refined polymer blend and tuned for modern swing speeds, A5 delivers exceptional snapback, strong tension stability, and a pure, connected response at contact.

What makes A5 different?

Spin potential comes from two primary factors:

1. Ball grip
2. Snapback

Round strings naturally generate less ball bite than aggressively shaped strings. To produce elite spin from a smooth profile, snapback has to operate at an exceptional level.

That’s where A5 stands out.

In Racketpedia laboratory testing, A5 received a 100/100 spin rating, making it our highest-rated round string for spin performance.

Rather than relying on sharp edges for grip, A5 generates rotation through low friction, rapid string movement, and powerful snapback. Its smooth surface allows the strings to move freely and return quickly, producing heavy spin while maintaining a clean and consistent response.

The symmetrical round profile also creates a predictable launch angle and repeatable ball flight, giving aggressive players the confidence to swing freely while maintaining precision and trajectory control.

The result is a string that feels controlled yet lively, stable yet responsive — built for players who want high spin potential without sacrificing the pure, predictable response of a round co-poly.

• Gauge: 1.25MM
• Color: Carbon Gray
• Profile: Round