Using modernized manufacturing procedures, Topspin has created a co-poly string that not only offers very little string movement, but in addition supplies the player with adequate power and plentiful control. Topspin Cyber Red is a very forgiving co-poly string. Much softer than many other polys, Cyber Red is a great string for all court players. A very durable string with good access to spin, Topspin Cyber Red is perfect for hard hitters with full strokes.