Improve Your Tennis
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magic
Comfort of the multi and performances of a mono.
rocket
Power and spin, no compromise.
armour
An evolution in terms of perception and ball's control.
hexa pro
Conceived to support more complex rotations.
armour soft
Modern and tech, designed to offer high performance.
sirius
For an unbeatable experience and top-level performance.
keen
A concentrate of technology, incredibly strong and responsive.
gold
The innovation of multifilament.
Tennis Strings
Tennis Players
Partners
Sustainability
String Project Hexa Pro is a monofilament tennis string with a hexagonal section. It is designed to support the most complex rotations, made of co-polyester containing both Soft Polyester and High Density Polyester (HDC) treated with alpha-olefins.
Hexa Pro is created through a sophisticated co-extrusion process that combines Soft Polyester and High Density Polyester (HDC), further treated with alpha-olefins. This synergy of materials provides the string with an exceptional response to lateral stress, maximizing grip on the ball for devastating effects.
Its hexagonal shape is specifically designed to "catch" the ball, amplifying spin generation at every impact.
Designed for competitive players who make spin their trademark, Hexa Pro excels in providing superior control (9/10), allowing precise trajectories even when producing extreme rotations.
Its capacity to produce spin (9.5/10) is simply extraordinary, enabling you to load the ball with effect to put opponents in trouble. Despite its competitive nature, it also offers a surprising level of power (8/10) to strike effectively.
Unlike many spin-focused strings, Hexa Pro does not sacrifice comfort (9/10). Its elastic fibers actively absorb impact, offering an Arm Friendly® sensation that allows long play without tiring the arm. Its solid construction ensures exceptional mechanical and dynamic durability, maintaining high-level performance over time and offering a direct and consistent feel with the ball. The effective snap-back of the strings further enhances spin generation.
String Project Hexa Pro is the definitive choice for the competitive player who makes spin the fundamental weapon of their game. It is ideal for tennis players seeking maximum control to vary spin and shot depth, and for athletes who want a durable string with consistent performance over time. It is also aimed at those who do not want to give up excellent comfort while using a string oriented toward control and spin.
Hexagonal
1.20 (17) | 1.25 (16) | 1.30 (15L)
250 g/mm
17 / 22 Kg
Parameters detected in lab through tests performed by Pro-t-one property of engineer G. Medri.
Download the PDFs of the laboratory tests:
This technology allows molecules' chains to twitch several times resulting a loss of minimal tension and, above all, keeping a higher feature's steadiness.
Thanks to the pre-stretch of the core, the entire string minimizes the loss of strain and, at the same time, it allows to reduce the stringing tension.
"Heating treatments" remove internal stress and align string's potential irregularities. Moreover, they make strings more flexible and elastic.
The string is perfected with a wax layer. This treatment extends the duration substantially reducing the wear and making stringing easier.
String's Friction's decrease offers: diminished strings' motion, greater potential spin due to greater snap back and a lasting duration.
about 17 stringings
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choose the calibre:
6 stringings
3 stringings
1 stringing
16 December 2025
prostrung.com
17 July 2020
ubitennis.com
13 October 2017
fabioferro.blog