Signum Pro Triton Tennis String is Signum's first string with Extreme Rough technology. Most textured or rough co-poly strings have little nicks and cuts to make the string grab the ball more, but this compromised durability. Triton uses drops of material added to the string to give it texture for spin, without compromising durability. At 1.18 mm, Triton will provide plenty of spin and power, and increased durability compared with other polyester strings of a similar gauge. Players can expect Triton to play comfortably when compared to average polyester string.