For players seeking the ultimate in spin and long lasting playability, Signum Pro Tornado 1.29 offers greater durability with slightly reduced spin compared to its thinner version. This string uses an updated molecular optimization on the popular Poly Plasma. The excellent spin generation of this string is aided by the heptagonal (7-sided) shape along with the axial twisting which increases the amount of ball bite that is possible. The new co-polyester formulation for Tornado increases its elasticity for greater comfort and power than typically polyester strings. Signum suggests stringing Tornado around 10% lower than your normal string due to the enhanced tension maintenance. The string is recommended for strong baseline players that want spin and power from a durable string.

Construction: Co-polyester monofilament

Gauge: 16G (1.29 mm)

Color: Anthracite

Length: 40 ft (12.2 m)

For more information on strings, see our following blog posts:

FAQs About Stringing Your Tennis Racquet

Breaking Down the 4 Main Types of String

String and Tension Tips from Tennis Express Stringing Experts

Need help selecting a string? Check out our Choosing the Right Tennis String guide for more assistance.