Tennis strings for ATP players
String Project strings are built for the demanding game of ATP tour professionals: tournament-level control, spin and power, with Arm Friendly® comfort that protects the arm even in the most intense sessions.
Monofilament and multifilament, all laboratory-tested by Pro-t-one: the same quality you choose when you want tournament performance.
The range for high-level play
Choose your string based on what you look for on court. All Arm Friendly®, all laboratory-tested.
String Project Keen
A concentrate of technology, solid and responsive.
Discover Keen
String Project Hexa Pro
Designed to support the most complex spin.
Discover Hexa Pro
String Project Sirius
An unbeatable experience and top-level performance.
Discover Sirius
String Project Armour Soft
Modern and technological, designed for high performance.
Discover Armour Soft
String Project Magic
The comfort of a multi with the performance of a mono.
Discover Magic
Ready to improve your game?
Choose the string that suits your style and feel the difference. Free shipping from €50.