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
points
alberi
Select the option
Discover the precision and power packed into the reduced gauge of String Project Keen, the monofilament tennis string available in 1.13 mm, 1.18 mm and 1.22 mm gauges. Born from advanced technological research, its unique material blend offers a surprising combination of solidity and responsiveness.
String Project Keen is a true concentration of technology. Its composition, the result of meticulous material selection, gives the string remarkable durability despite its thin gauge. This characteristic, combined with its high responsiveness, translates into an excellent ability to generate spin (9/10) and power (8/10) during play, while maintaining a natural and precise connection with the ball.
Keen stands out for its ability to provide a direct and communicative feel with the ball. Despite its solid core, it offers a control level (7.5/10) that allows you to manage your game with confidence. Its ability to generate effective spin and controllable power makes it an ideal choice for players seeking a high-performance string without sacrificing feel.
Despite its thin profile, Keen maintains an excellent level of comfort (8.5/10), providing effective arm protection. This feature makes it suitable even for players who prefer thin strings for greater sensitivity but don’t want to sacrifice comfort during extended play.
The availability in three different gauges (1.13 mm, 1.18 mm, 1.22 mm) allows players to choose the version best suited to their playing style and their preferences in terms of feel, spin and durability.
Experience the unique combination of thinness, durability and responsiveness with String Project Keen. A monofilament string that offers spin, power and a surprising level of comfort, available in various gauges to perfectly match your game.
Packaging
200 m Reel, 6 Sets Pack of 12 m, 3 Sets Pack of 12 m, Single Set of 12 m
Caliber
1.13 mm, 1.18 mm, 1.22 mm
Model
Keen
Indication
Comfort, Responsiveness, Spin
Typology
Monofilament
Shaping
Circular
Power
8
Control
7.5
Comfort
8.5
Spin
9
Tension
7
Static Stiffness 15-20 kg
0.80 kg/mm
Static Stiffness 20-25 kg
Dynamic Stiffness
228 g/mm
Optimal Tension
18 - 22 kg
Free shipping for orders starting from €50. Delivery within 24/48 hours. Free returns within 30 days.
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