SizeGenetics vs Phallosan Forte: Which Device Delivers Better Results?

You’ve probably heard the promises—bigger, better, and permanent results without surgery. But with so many options out there, choosing the right penile traction device can feel overwhelming. Two names keep popping up: SizeGenetics (Official Store 🏅) and Phallosan Forte (Official Store 🏅). Both claim to deliver real gains, but which one actually works for you?

One is a medical-grade extender with clinical backing, while the other boasts a unique belt system for discreet wear. The question isn’t just about effectiveness—it’s about comfort, convenience, and long-term results. Let’s break down the key differences so you can make an informed choice.

Overview of SizeGenetics and Phallosan Forte

SizeGenetics

SizeGenetics is a medical-grade penile traction device developed in Denmark. It uses traction therapy to promote natural tissue growth, increasing both length and girth permanently. Clinical studies show an average 28% length increase and 19% girth improvement after 4–6 months of use. The device also helps correct Peyronie’s Disease and enhances erection quality by boosting blood flow.

Key features:

• Clinically tested for safety and effectiveness
• Gradual tension adjustment for comfort
• Permanent results without ongoing use
• Warranty and money-back guarantee

Phallosan Forte

Phallosan Forte is another FDA-cleared traction device designed for non-surgical enlargement. It uses a belt-and-strap system for discreet wear under clothing. While clinical data is limited, user reports suggest noticeable gains over time. It focuses on low-tension stretching, making it suitable for extended daily wear.

Key features:

• Discreet and wearable for long periods
• Adjustable tension for comfort
• Suitable for beginners due to gentle stretching
• No permanent clinical data available

How They Compare

Both devices use traction therapy, but their designs differ. SizeGenetics offers stronger clinical backing and proven permanent results, while Phallosan Forte prioritizes comfort and discretion. If you want measurable gains with medical validation, SizeGenetics may be the better choice. If ease of use and subtlety matter more, Phallosan Forte could suit you.

Which factors matter most to you—proven results or all-day wearability? Your goals determine the best fit.

Key Features Compared

Choosing between SizeGenetics and Phallosan Forte depends on your priorities—whether you prefer strong traction or all-day comfort. Here’s how they stack up in key areas.

Design and Comfort

SizeGenetics provides strong traction but has a bulkier design, making it less ideal for discreet daytime wear. It’s built for effectiveness over convenience.

Phallosan Forte focuses on comfort with a sleek, low-profile design. You can wear it under clothing or even at night without discomfort.

Traction Mechanism

SizeGenetics delivers higher tension right away, which some users find more effective for faster gains. It’s designed for those who prioritize results over wearability.

Phallosan Forte starts with gentler tension but offers an optional upgrade (Phallosan Plus+) for increased pull. But, higher tension reduces its nighttime usability.

Adjustability and Fit

SizeGenetics has limited adjustability, especially during erections. It’s built for stability but sacrifices some flexibility.

Phallosan Forte adapts easily to different states, whether flaccid or erect. Its adjustable belt system ensures a secure fit without restricting movement.

Feature	SizeGenetics	Phallosan Forte
Design	Bulky, less discreet	Sleek, discreet
Comfort	Less ideal for long wear	Comfortable for all-day use
Traction	Stronger initial pull	Lower tension (upgradeable)
Adjustability	Less flexible for erections	Highly adjustable
Results	Clinically proven (28% length increase)	User-reported gains (32% curvature correction)

Effectiveness and Results

Both SizeGenetics and Phallosan Forte deliver results, but their approaches differ. One focuses on higher tension for faster gains, while the other prioritizes comfort for long-term wear.

Clinical Studies and Evidence

SizeGenetics has strong clinical backing, with studies showing permanent length and girth increases. Users report an average 28% length gain and 19% girth improvement after 4–6 months. It’s endorsed by specialists and proven effective for Peyronie’s Disease correction.

Phallosan Forte’s research highlights up to 32% size increase with consistent use. Its vacuum system is clinically tested for comfort and curvature correction, though long-term data is less extensive than SizeGenetics.

User Reviews and Feedback

SizeGenetics users praise its durability and noticeable results, but some find it bulky for daily wear. Gains are gradual, with many seeing changes after 4–6 months.

Phallosan Forte stands out for comfort and discretion. Users wear it all day or overnight, though results may take 6–8 months. Some note it’s gentler, making it ideal for beginners.

Both devices work—your choice depends on whether you prioritize fast results or all-day comfort.

Price and Value for Money

When comparing SizeGenetics and Phallosan Forte, price plays a big role in your decision. But value goes beyond just the upfront cost—it's about what you get for your money.

• SizeGenetics is generally more affordable than premium extenders. While exact pricing varies, it offers a medical-grade, clinically tested device with proven results. You get permanent gains—averaging 28% in length and 19% in girth—backed by a warranty and money-back guarantee.
• Phallosan Forte costs slightly more but focuses on comfort and discretion. Its belt-and-strap system lets you wear it in public or at night. Clinical tests show gains of up to 1.9 inches in 6 months, and it corrects curvature, adding extra value.

So, which one gives better value? If you want clinically proven results at a lower price, SizeGenetics is a strong pick. If comfort and all-day wear matter more, Phallosan Forte justifies its higher cost. What’s your priority—fast results or long-term convenience?

Ease of Use and Maintenance

Design and Setup

SizeGenetics uses a rod-based system that’s bulkier than Phallosan Forte. It comes with clear instructions and multiple accessories, making setup straightforward. But, its size can make it less convenient for all-day wear.

Phallosan Forte features a low-profile belt-and-bell design. It’s easier to adjust and fits discreetly under clothing. The setup is simple, with fewer parts to manage.

Comfort and Wearability

With SizeGenetics, some users find extended wear uncomfortable. The device isn’t designed for overnight use and may feel noticeable under clothes.

Phallosan Forte excels in comfort. Many users wear it for long periods without issues. It adapts to nighttime erections automatically, making it suitable for 24/7 use.

Maintenance

SizeGenetics requires regular cleaning and lubrication due to its moving parts. More components mean more upkeep.

Phallosan Forte has fewer parts, so maintenance is simpler. Once adjusted, it rarely needs readjustment.

Quick Comparison

Feature	SizeGenetics	Phallosan Forte
Discretion	Less discreet	Very discreet
Comfort	Can be less comfortable	Highly comfortable
Maintenance	More frequent	Minimal
Overnight Use	Not recommended	Recommended

Which fits your lifestyle better—a device built for results or one designed for comfort?

Pros and Cons

Choosing between SizeGenetics and Phallosan Forte depends on your priorities—effectiveness, comfort, or convenience. Below, we break down the strengths and weaknesses of each device.

SizeGenetics Pros and Cons

Pros:

• Clinically proven: Uses traction to stimulate cell division, increasing length (28% average) and girth (19% average) over 4–6 months.
• Higher tension: Offers stronger pull for faster results, ideal for those prioritizing growth.
• Medical benefits: Helps correct Peyronie’s disease and improves erection quality.
• Discreet shipping: Arrives in plain packaging for privacy.

Cons:

• Less comfortable: Beginners may find the strap or rod design uncomfortable during extended wear.
• Daytime-only use: Too bulky for overnight wear and may interfere with erections.
• Visibility: Harder to conceal under clothing compared to sleeker alternatives.

Phallosan Forte Pros and Cons

Pros:

• Comfortable design: Lightweight and barely noticeable, making it easy to wear all day or night.
• Overnight-friendly: Adjusts to erections automatically, reducing discomfort during sleep.
• Beginner-safe: Lower tension minimizes injury risk, perfect for first-time users.
• Simple setup: Easy to put on and adjust without frequent readjustments.

Cons:

• Slower results: Lower tension means progress takes longer unless you upgrade to the Plus+ add-on ($120 extra).
• Limited nighttime use with Plus+: The higher-tension upgrade isn’t suitable for sleep or discreet wear.
• Higher cost: The base model is moderately priced, but adding features increases the investment.

By weighing these factors, you can decide which device aligns with your goals—whether it's faster results or all-day comfort.

Which One Should You Choose?

Choosing between SizeGenetics and Phallosan Forte depends on your priorities—whether you value proven results or comfort and discretion. Both devices deliver gains, but their designs and usage differ significantly.

For Faster, Clinically Proven Results

• SizeGenetics offers higher tension right away, leading to a 29% increase in size with consistent use.
• It’s medically backed, ideal for correcting Peyronie’s Disease and achieving permanent gains.
• The trade-off? It’s bulkier and less comfortable for all-day wear.

For Comfort and Discretion

• Phallosan Forte focuses on low-tension stretching, making it painless for extended wear, even overnight.
• Its belt system lets you move freely, with reports of a 32% size increase over time.
• But, it may take longer to see results compared to SizeGenetics.

Key Questions to Ask Yourself

• Do you prioritize speed or comfort? SizeGenetics works faster, but Phallosan Forte fits seamlessly into daily life.
• Will you wear it overnight? Phallosan Forte adapts to nighttime use, while SizeGenetics isn’t designed for sleep.
• Is discretion important? Phallosan Forte’s slim design hides under clothing; SizeGenetics is more noticeable.

Your choice hinges on lifestyle and goals. Want maximum gains with a clinical guarantee? SizeGenetics is the pick. Prefer subtle, all-day comfort? Phallosan Forte wins.

Conclusion

Choosing between SizeGenetics and Phallosan Forte depends on what matters most to you. If you want clinically backed results with higher tension and don’t mind a bulkier design SizeGenetics is the way to go. For comfort and discretion especially if you plan to wear it all day or overnight Phallosan Forte shines.

Both devices deliver but your priorities—speed vs. subtlety—will steer your decision. Whether you’re after permanent gains or a gentle beginner-friendly approach there’s an option customized to your needs. Pick the one that aligns with your lifestyle and goals for the best experience.