In brief. Choosing the size of a Parawing is not just about its surface area in square meters. The actual power depends on precise aerodynamic parameters: aspect ratio, profile thickness (camber), construction type (single or double skin) and drag generated by the bridle. At equal surface, a compact or double-skin wing will not cover the same wind range as a high-aspect-ratio or single-skin wing. On the FYNIX, four full sizes (3, 4, 5 and 6 m) are sufficient to cover all conditions. Thanks to the PushBar System®, which offers dynamic power management, the wind range of each wing is considerably expanded, eliminating the need for half-sizes.
What does the power of a Parawing depend on? (Beyond surface area)
Before choosing a surface area, you need to understand that square meters are not everything. Surface area is just one parameter among others. The actual power generated by a wing depends directly on the architectural choices made by the designer:
- Profile thickness (camber): In simple terms, the power generated is proportional to profile thickness. The more camber a wing has, the more power and low-end torque it generates.
- Aspect ratio: A high-aspect-ratio wing (thin and sleek) will glide better, generate higher top speed and take off earlier in light wind. In return, it will be less packable (more complex and bulky to fold on water or beach). Conversely, a more compact wing offers increased maneuverability and is much easier to fold.
- Bridle (The stability/drag trade-off): The bridle is essential for maintaining the profile. The more bridle lines, the better the wing is held in strong wind. However, each bridle line adds aerodynamic drag, which slows the wing. All of the design art is finding the perfect balance: excellent structural support with minimal lines to reduce drag.
- Your equipment (Foil and Board): A lifting Foil (large shape) and a board with volume will help you take off earlier, allowing for a smaller wing. A small fast Foil will require more power to express itself. The subject is covered in detail in our guide which Foil to choose for Parawing.
Single skin vs Double skin: the truth about drag and power
This is the fundamental point that explains why two 4 m² wings from different brands do not work at all in the same wind:
Double Skin (Priority on glide): Contrary to popular belief, a double-skin wing does not generate less intrinsic power, but it generates much less drag. It offers maximum glide and acceleration, approaching Kitefoil sensations. On the other hand, its profile requires a minimum air flow velocity to inflate and establish, which shifts its useful range upward (it requires more wind to get started).
Single Skin (Priority on torque and lightness): A single-skin wing generates more drag, which gives it tremendous power and low-end torque (bottom of range). This is ideal for pulling out of the water easily. However, this extra drag means it saturates faster at top speed and will end up pulling harder on your arms as the wind strengthens.
| Construction | Dynamic behavior | What you gain | The aerodynamic trade-off |
|---|---|---|---|
| Single skin | More drag, strong low-end torque | Starts very early, ultra-light and compact to store. | Saturates faster at top speed, pulls more in the arms in max gusts. |
| Hybrid | Balanced drag / glide trade-off | Smooth glide, less arm effort, excellent upwind capability. | Slightly less compact when folding than pure single skin. |
| Double skin | Minimal drag, high air penetration | Maximum speed and glide (Kitefoil sensations). | Requires more apparent wind to establish the profile at takeoff. |
At equal construction, fabric also matters. The FYNIX uses a lightweight 30 g/m² canvas, naturally water-repellent. This lightness improves flight in light wind: the wing stays dry and reactive, it holds better in the air when the wind drops, which facilitates takeoff. Conversely, canvas that becomes water-saturated becomes heavier, increases drag and significantly loses low-end range.
Remember this for next: construction shifts the wind range. This is why the ranges announced below always apply to a specific construction, here single skin. Choosing your construction therefore already orients your size choice.
What size based on wind and your body weight?
The table below gives the wind ranges of the FYNIX in single skin. A critical point: these ranges are for the FYNIX, wider than the market average thanks to the PushBar System®. A standard wing without dynamic power management will not cover the same range.
| FYNIX size | Wind range (single skin) | For what use |
|---|---|---|
| 6 m² | 8 to 20 knots | Light wind, ideal for large riders or low-aspect-ratio Foils. |
| 5 m² | 10 to 25 knots | The versatile light to moderate wind, perfect for getting started. |
| 4 m² | 14 to 29 knots | The all-purpose once the wind sets in properly. |
| 3 m² | 23 to 35+ knots | Strong wind, for experienced riders. |
These ranges are for a reference rider of approximately 80 kg, and assume adapting the Foil and board size. Adjust based on your weight: lighter (60 to 70 kg), you can go down a size. Heavier (90 to 100 kg), go up a size to compensate for the need for power at takeoff. For the complete method, see our guide how to choose your Parawing.
Why the FYNIX range eliminates the need for half-sizes
By analyzing the market, you will notice that most brands offer up to 6 or 8 different sizes (e.g. 2.2m, 3.5m, 4.7m, etc.). When the useful range of a fixed-profile wing is narrow, multiplying intermediate sizes is the only way to fill the gaps between two surfaces.
At SROKA, we took the opposite approach through technological innovation. Why buy and transport two wings when one can cover the same range?
The FYNIX is the first Parawing equipped with true dynamic power management thanks to the PushBar System®. This system, registered trademark and patent pending, works with lines that slide inside the 32 cm carbon bar. Instead of being at the mercy of wind variations or having to manually adjust the angle of attack at the bridle, it modifies the wing geometry in real time. By dramatically extending the top of range for each profile, the PushBar System® radically expands the versatility of each surface.
Result: 4 full sizes (3, 4, 5 and 6 m) are enough to cover a massive range of 8 to over 35 knots. Your quiver is simpler to choose, lighter to transport, and much more economical to buy. Discover the range on the SROKA Parawing collection.
| Brand and model | Number of sizes in catalog | Wind range management |
|---|---|---|
| FYNIX SROKA (single skin) | 4 full sizes (3, 4, 5, 6) | PushBar System®: Dynamic power management that extends the wind range of each profile. |
| BRM S3 | 5 sizes | Fixed profile. Multiplication of surfaces to avoid wind range gaps. |
| Flysurfer POW 2 | 5 sizes | Fixed profile. Tight useful ranges per wing. |
| Ozone PowerPack | 6 sizes | Fixed profile. Requires purchasing intermediate sizes. |
| F-One Frigate | 8 sizes | Fixed profile. Very wide range of half-sizes needed to cover 8 to 30 knots. |
Data from official technical documentation of brands, 2026 survey.
Just one wing in the bag. Where a standard rider must carry two fixed wings to handle any wind variation, the wide range of the FYNIX secures your sessions with a single line. Less clutter, less budget, more peace of mind.
One wing or a full quiver?
To get started with Parawing, no need to complicate your equipment. A 4 m or 5 m covers the vast majority of needs. A slightly larger wing provides more support at takeoff, thus stabilizing the precarious balance of early flights.
The ideal setup for getting started: a FYNIX single skin 5 m, a Downwind-oriented board (like the Sroka LW Mid around 7'2), and a high-aspect-ratio Foil from the UHA range between 1,300 and 1,500 cm²: this aspect ratio maximizes both lift, for early takeoff, and glide once flying. You drop the Foil surface once you've got the basics down.
FAQ: What size Parawing to choose
What size Parawing to choose as a Beginner?
A 4 m or 5 m. They provide more support and stability than a smaller size. In light summer wind, opt for the 5 m.
Which Foil to choose to get started in Parawing?
A front wing of 1,300 to 1,500 cm² with high aspect ratio, in the UHA range. This aspect ratio maximizes both lift, for early takeoff and low speed, and glide once flying. All details in our guide which Foil to choose for Parawing.
Single or double skin to get started in Parawing?
Single skin without hesitation. It generates more drag but offers tremendous low-end torque to pull out of the water easily, while remaining ultra-light and easy to fold (packable).
Why doesn't the FYNIX have half-sizes?
Thanks to the PushBar System®. This dynamic power management system (registered trademark, patent pending) modifies wing geometry in real time, expanding its usable wind range and making intermediate sizes unnecessary.
Does the aspect ratio of a Parawing change size selection?
Yes. High aspect ratio glides better and takes off earlier but is bulky to fold. A compact profile is extremely manageable and easy to pack on water, but will require a bit more surface area for the same very light wind.
About the author
Bruno Sroka is a triple world champion in Kitesurfing and Kitefoil, former PE teacher and founder of SROKA Company. His expertise as an extreme rider, adventurer and technical designer feeds the aerodynamic development of every Foil, Wing foil and Parawing product from the brand. He is the designer of the PushBar System®.
To deepen your technical knowledge: discover our exhaustive comparison between Parawing and Wing foil and our ultimate guide to 30 essential Parawing questions.
