Tourna's Big Red string is a firm co-poly designed for players with long, fast strokes. It delivers a firm feel and great feedback, which lets the player know exactly where the ball is hitting the strings. Our playtesters were impressed with this string's control on full swings, even when installed at the low end of the tension range. Big Red also puts a very tight grip on the ball, enabling the player to generate huge spin. This is a great option for big hitters looking for precision and spin.