Solinco Confidential is a co-polyester monofilament string that is extremely popular amongst many ATP and WTA  players and has been in development for a few years. 

Confidential has a four sided profile that provides players with huge spin potential whilst remaining easy to control the ball. Relatively easy power and good tension retention make this a popular string choice for intermediate to advanced players.

Colour: Silver

Gauge: 1.20mm, 1.25mm or 1.30mm