an evolution in terms of feeling and control of the ball

Armour is a point of reference when it comes to professional strings.

A monostring that derives from the Hexa Pro string, which is an evolution in terms of synch and ball-control, and, in spite of being a smooth string, it also performs well on heavy spins.

With a good snapback and a better shock compactness, it has been placed at the top of String Project’s professional range, for an optimal conduct under every aspect.

Armour is arm-friendly string, in other words offering arm protection by creating a more comfortable feel that no other string can offer.


Of a circular shape, it is a co-polyester string which contains 20% of Soft Polyester and High Density Polyester, it is treated with alpha-olefin through a special production process which makes it solid but not hard on impact.



The hold of tension is ensured by the multiple thermal treatments it has undergone during production that exalt its performance through time.


Power: 7,5
Control: 7,5
Spin: 9
Comfort: 8
Stability: 7
Tension Loss: 9,5
Resilience Peak: 9


Static Stiffness 15-20Kg : 0,90 Kg/mm
Static Stiffness 20-25Kg : 0,80 Kg/mm

Dynamic Stiffness : 255 g/mm

Data taken from tests published by Pro-t-one of Eng. G. Medri


Material: 20% of Soft Co-Poly wich Co-Poly (HDC) + Alfa Olefine

Manufatory Process: Pre-Stretch + Multiple Heating + Liquid Wax

Section & Caliber: Circolare 1.25 (16L)

Color: Black

Laboratory Tests

  • Laboratory tests perfomed by Eng. Gabriele Medri of Pro t one (PDF)

Test on Court

  • Court Review performed by Eng. Gabriele Medri of Pro t one (PDF)
  • Court Review performed by Fabio Ferro of (Link)


Suggestions for use

We recommend to string the usual tension and to stay in the range of best performance of the rope, 18-22 Kg, to maintain the characteristics of power and comfort of play.