String Project Armour Soft, monofilament tennis string
String Project Armour Soft is a balanced competition monofilament tennis string: it has control, spin, power and comfort. It is born from the Armour blend, with a higher percentage of Soft Polyester, and stands out for its resilience (9/10) and tension maintenance (9/10). Arm Friendly®.
- Arm Friendly® Monofilament
- Gauges 1.20 · 1.24 · 1.29 · 1.33 mm
- Evolution of the Armour blend
- Tension 18–22 kg
Playing profile
String Project Armour Soft has it all: spin (9/10), control (8.5/10), power (8/10) and comfort (8/10). No weak points. Tension maintenance (9/10) and resilience (9/10) keep this balance the same over time.
- Spin9/10
- Tension9/10
- Resilience9/10
- Control8.5/10
- Power8/10
- Comfort8/10
Ratings and technical specifications measured in the laboratory by Pro-t-one (Eng. G. Medri) — laboratory test report 1.24 mm (PDF).
Competition performance with the pleasure of impact
On court, Armour Soft delivers a clean impact, with no harshness: what remains is the pleasure of contact with the ball. Power and spin come naturally and fluidly. It feels like a consistent, reliable string that keeps its characteristics session after session.
Clean, comfortable impact
Armour Soft is Arm Friendly®, with 8/10 comfort. The higher percentage of Soft Polyester reduces the vibrations transmitted to the arm.
- Clean impact, no harshness
- Reduced vibrations to the arm
- Comfort even in long sessions
- Consistent, reliable feel
Competition-level responsiveness and spin
With 9/10 spin and 8/10 power, Armour Soft delivers complete competition performance. Resilience (9/10) ensures consistent responsiveness over time, while tension maintenance (9/10) keeps its characteristics unchanged.
- Natural, fluid 9/10 spin
- Balanced 8/10 power
- Top-tier 9/10 resilience
- Exceptional 9/10 tension maintenance
The evolution of the Armour blend
Armour Soft is born from the Armour blend, with a higher percentage of Soft Polyester. It is this composition that gives it top-of-the-range resilience and tension maintenance and a natural inclination towards power and spin.
The manufacturing processes
Spring Load
It allows the molecular chains to contract repeatedly, with minimal tension loss and greater stability of properties over time.
Pre-Stretch
The pre-stretch of the core minimises tension loss and allows stringing at lower tensions.
Double Heating
The heat treatments remove internal stresses and any irregularities in the string, making it more uniform, flexible and elastic.
Liquid Wax
The string is finished with a layer of wax, which reduces wear, significantly extends its lifespan and makes stringing easier.
Low Friction
Reducing friction offers three advantages: less string movement, greater spin potential thanks to better snap-back, and a longer lifespan.
Technical data sheet
| Feature | Value |
|---|---|
| Type | Arm Friendly® competition monofilament (Armour blend with Soft Polyester) |
| Cross-section | Round |
| Gauges | 1.20 mm (17) · 1.24 mm (16L) · 1.29 mm (16) · 1.33 mm (15L) |
| Dynamic stiffness | 215 g/mm |
| Static stiffness | 0.88 kg/mm |
| Manufacturing processes | Spring Load, Pre-Stretch, Double Heating, Liquid Wax, Low Friction |
| Recommended tension | 18–22 kg |
The right string if you see yourself here
Competitive players
Those who play tournaments and want a reliable string that doesn't change behaviour from one match to the next.
4th-category players
Those who are building their game and want a complete string that supports them on every shot.
Those seeking consistency over time
Those who want a string that keeps its properties session after session: with 9/10 tension maintenance and 9/10 resilience, Armour Soft is among the most reliable strings in the range.