Volkl V-Square is a four-sided co-polyester tennis string built for players who prioritize maximum ball bite, spin and control. Its genuinely square profile gives it sharper corners than rounded or lightly shaped polys, placing it among Volkl’s most aggressive spin strings.
Volkl uses an additive intended to preserve reasonable comfort and limit tension loss without removing the firm response expected from a square monofilament. Independent laboratory listings have placed V-Square at or near the top for string-to-ball friction.
It is best suited to healthy intermediate and advanced players with fast, spin-oriented swings. The Tennis String Finder can help determine whether its firmness and maintenance demands fit a player’s game.
Volkl V-Square Rating
| Category | Rating |
|---|---|
| Power | 6.5/10 |
| Spin | 10/10 |
| Comfort | 6/10 |
| Control | 9/10 |
These ratings compare V-Square with the complete string market. Spin and control are exceptional, while comfort remains relative to other firm co-polyesters.
Volkl V-Square Specifications
| Specification | Details |
|---|---|
| String type | Co-polyester monofilament |
| Profile | True square shape with four sharp sides |
| Surface | Defined edges with a low-friction finish |
| Gauges | 16 / 1.30mm, 17 / 1.25mm, 18 / 1.20mm and 19 / 1.10mm |
| Colors | Lava, Neon Yellow and Black, depending on market |
| Set length | Approximately 12m |
| Reel length | Approximately 200m |
| Primary benefit | Spin and control |
Gauge and color combinations vary by retailer. The official family spans four diameters, allowing substantial adjustment of response and durability.
Material and Construction
V-Square uses a solid co-polyester monofilament with a four-sided cross-section. Unlike a round string with surface texture, its spin profile is created by the geometry of the entire strand.
The sharp corners increase string-to-ball friction and help grip the felt. They also create more string-on-string contact pressure, which can produce notching and make the string abrasive against a soft hybrid partner.
Volkl describes an exclusive material additive designed to improve comfort and tension behavior. That does not turn V-Square into a soft nylon string. It remains a firm polyester intended for developed strokes.
The square profile can twist during installation, so careful stringing is important. Consistent orientation helps preserve the intended edge interaction across the stringbed.
Volkl V-Square Performance
Power
V-Square is low to medium powered across the full string market. It rewards acceleration but provides limited free depth for short or hesitant swings.
That restraint allows aggressive players to swing upward and forward without the ball launching unpredictably. Powerful rackets can benefit from the added containment.
Thinner gauges feel more responsive. The 1.30mm version offers the calmest launch and requires the most player-generated pace.
Power rating: 6.5/10
Spin
Spin is V-Square’s defining quality. Its four sharp corners create exceptional bite, and independent laboratory listings have ranked it among the highest-friction strings available.
The low-powered response also encourages fast racket-head acceleration. Together, edge grip and swing freedom help produce high net clearance, dipping angles and heavy kick serves.
Maximum spin does not remain unchanged forever. As the edges wear and the intersections notch, snapback can decline even while the string remains intact.
Spin rating: 10/10
Control
V-Square provides excellent control for long, fast swings. Its firm monofilament structure and spin-assisted trajectory let aggressive baseliners aim close to the lines with confidence.
Directional precision is strongest while the stringbed remains fresh. The response can change after tension loss or heavy notching reduces movement.
Players with compact swings may confuse low power with control. A string that repeatedly leaves the ball short is not an effective match simply because it limits launch.
Control rating: 9/10
Comfort and Feel
V-Square offers reasonable feel for a square polyester, but it is firm across the wider market. Volkl’s additive and the thinner gauges can make it more playable than extremely rigid first-generation polys.
The impact is crisp and connected rather than plush. Clean contact is rewarded, while off-center hits can feel demanding in a stiff racket or high-tension setup.
Players with current arm discomfort should choose natural gut, multifilament or synthetic gut instead of relying on a relative comfort claim within polyester.
Comfort rating: 6/10
Durability and Tension Maintenance
Physical resistance to breakage is good, especially in 1.30mm and 1.25mm. The solid monofilament construction withstands hard hitting better than most multifilaments.
The sharp square intersections can notch one another. Thin gauges provide exceptional bite but may break considerably faster in open patterns or under heavy topspin.
Useful playability duration is separate from physical life. Replace V-Square when launch, feel or snapback changes meaningfully, even if the string has not broken.
Choosing the Right Gauge
| Gauge | General characteristics |
|---|---|
| 16 / 1.30mm | Maximum stability, control and break resistance |
| 17 / 1.25mm | Best general balance of spin, control and durability |
| 18 / 1.20mm | More response and bite with faster notching |
| 19 / 1.10mm | Maximum feel and spin access with the shortest physical life |
The 17 / 1.25mm version is the best starting point for most experienced players. Dense patterns can benefit from 1.20mm, while open patterns and frequent breakers may require 1.30mm.
Full Bed or Hybrid Setup
Full Bed
A full bed maximizes V-Square’s edge grip, control and consistent response. It suits healthy polyester users with developed swings.
The string does not need excessive tension to control the ball. Lowering tension within a sensible range can preserve response and comfort.
Volkl V-Square in the Mains With Softer Crosses
V-Square mains preserve the shaped spin profile, while natural gut or multifilament crosses add power and pocketing.
Its sharp corners can saw through soft crosses quickly. A durable, smooth cross and regular inspection are important.
Softer Mains With Volkl V-Square Crosses
Soft mains dominate power and comfort, while V-Square crosses add firmness. This orientation is usually less logical because the square cross can restrict and abrade the main strings.
A smooth round polyester is generally a better cross when free main-string movement is the priority.
General Tension Guidance
V-Square should normally be installed below a nylon or multifilament reference. Its firm construction and sharp profile already provide substantial control.
Lower tension improves depth, pocketing and comfort. Higher tension flattens the launch but can make the stringbed unnecessarily rigid.
Use the racket manufacturer’s range and adjust gradually for head size, pattern and gauge. The Tennis String Tension Calculator provides broad guidance.
Who Should Use Volkl V-Square?
V-Square is best suited to:
- Intermediate and advanced topspin players
- Healthy players with fast racket-head speed
- Aggressive baseliners seeking maximum bite
- Powerful-racket users needing control
- Competitors willing to restring polyester regularly
- Players who want several thin-gauge options
Who Should Avoid Volkl V-Square?
V-Square is less suitable for:
- Beginners and compact swingers
- Players with current arm discomfort
- Users wanting easy multifilament power
- Players who rarely replace polyester
- Soft-string hybrid users concerned about rapid sawing
- Flat hitters who do not benefit from extreme edge grip
Pros and Cons
| Pros | Cons |
|---|---|
| Exceptional string-to-ball bite | Firm across the wider market |
| Excellent control | Limited free power |
| Four gauge options | Sharp edges can saw soft crosses |
| Strong physical resistance in thicker gauges | Thin gauges can break quickly |
| Predictable shaped response | Snapback declines with notching |
| Good value for a performance poly | Demands regular replacement |
Volkl V-Square Compared With Other Strings
V-Square vs Volkl Cyclone
Volkl Cyclone has ten sides and a slightly more rounded, versatile response. V-Square provides sharper bite and a firmer spin-focused identity.
V-Square vs Volkl V-Torque Tour
Volkl V-Torque Tour uses a twisted six-sided cog shape and feels softer. V-Square is more direct and produces stronger raw edge grip.
V-Square vs Solinco Tour Bite
Solinco Tour Bite is another square control polyester with exceptional spin. Both suit fast swingers, while preferred feel and gauge availability will decide the better match.
V-Square vs Tecnifibre 4S
Tecnifibre 4S also uses four defined sides and targets spin-heavy advanced play. V-Square offers an especially broad thin-gauge range.
Final Verdict
Volkl V-Square is a specialist spin string for experienced players who want sharp bite and strong control. Its true square profile and low-powered co-polyester response support aggressive upward swings and precise trajectories.
The compromises are firmness, limited free depth and declining snapback as the intersections notch. It is not an appropriate shortcut for beginners or players with arm discomfort.
The 17 / 1.25mm version offers the best overall balance. Move thicker for durability or thinner when a dense pattern and frequent restringing make maximum bite the priority.
Frequently Asked Questions
How many sides does Volkl V-Square have?
It has four sharply defined sides, creating a true square cross-section.
Is V-Square a soft string?
No. It has reasonable feel for a shaped co-polyester but remains firm compared with nylon, multifilament and natural gut.
Which gauge should most players choose?
The 17 / 1.25mm version provides the most balanced combination of spin, control and durability.
Is V-Square suitable for beginners?
Generally no. Beginners usually benefit more from the power and comfort of synthetic gut or multifilament.
Does V-Square work in a hybrid?
Yes, especially in the mains, but its sharp corners can wear through a soft cross quickly.