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.

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

What problem does A5 solve?

Spin potential is driven by two key factors:

Ball grip

Snapback

Round strings typically generate less ball grip due to their smooth geometry. To achieve elite spin performance, snapback must operate at an exceptional level — compensating for reduced ball bite and allowing the string to deliver high rotational output.

Despite its smooth geometry, Racketpedia lab testing rated A5 a perfect 100/100 for spin, making it our highest-rated round string for spin performance — establishing A5 as a new benchmark for round co-poly performance.

While A5 doesn’t rely on sharp edges or aggressive shaping for ball bite, it compensates with elite snapback and low-friction response, allowing the strings to accelerate and return with intensity — generating heavy rotation through speed, elasticity, and string movement.

The string’s symmetrical round construction also produces a pure and predictable launch angle, giving players the confidence to swing aggressively while maintaining consistent trajectory control and repeatable ball flight.

The result is a string that feels controlled yet lively, stable yet responsive — ideal for aggressive baseline players seeking a connected feel with pinpoint accuracy.

Gauge 1.20MM

Color Infrared

Length - 330FT (Approximately 8 Rackets)

🇨🇦 Free standard shipping over $150 (after discounts, before shipping + taxes). All items ship only within Canada.

Eligible items can be returned within 14 days of delivery for a refund. Before 30 days, customers are eligible for an exchange (in-store only) or store credit (in-store and online). We are not able to offer exchanges online. We recommend returning your order and placing a new order online. Sale items under 50% off are only eligible for store credit upon return. Please ensure that your item is eligible for return before purchasing if you are hesitant.

For eligibility and more information, please see our full return/exchange policy.