solinco confidential—the name that most tennis pros and hobbyists alike have come across when talking about tennis strings. solinco confidential Tennis String: With its fame of high quality, durability, and performance, the solinco confidential tennis string is the number one pick for them who want precision, spin, and power in their game. So, whether you’re a pro or an amateur, the string you choose is of utmost importance, and what better than solinco confidential to ensure that you’re always one step ahead of the competition.