The best tennis strings

Looking for the best tennis strings? The String Project range is designed for every need — control, spin, power or comfort — with monofilament and multifilament strings, all Arm Friendly® and laboratory-tested by Pro-t-one.

There's no single “best string”: there's the right one for your game. Here you'll find our 8 strings compared, each with its dominant trait, to choose with confidence.

Our 8 strings compared

Each string excels at something: start from the trait you want and find the best for you. All Arm Friendly®, all laboratory-tested.

Corda da tennis String Project Armour – 200 m reel
Control · Monofilament

String Project Armour

An evolution in feel and ball control.

Discover Armour
Corda da tennis String Project Keen – 200 m reel
Control · Monofilament

String Project Keen

A concentrate of technology, solid and responsive.

Discover Keen
Corda da tennis String Project Hexa Pro – 200 m reel
Spin · Monofilament

String Project Hexa Pro

Designed to support the most complex spin.

Discover Hexa Pro
Corda da tennis String Project Rocket – 200 m reel
Power · Monofilament

String Project Rocket

Power and spin, no compromises.

Discover Rocket
Corda da tennis String Project Sirius – 200 m reel
All-round · Monofilament

String Project Sirius

An unbeatable experience and top-level performance.

Discover Sirius
Corda da tennis String Project Armour Soft – 200 m reel
Comfort · Monofilament

String Project Armour Soft

Modern and technological, designed for high performance.

Discover Armour Soft
Corda da tennis String Project Magic – 200 m reel
Comfort · Monofilament

String Project Magic

The comfort of a multi with the performance of a mono.

Discover Magic
Corda da tennis String Project Gold – 200 m reel
Comfort · Multifilament

String Project Gold

The innovation of the multifilament.

Discover Gold

Ready to improve your game?

Choose the string that suits your style and feel the difference. Free shipping from €50.