SizeGenetics Review 2026: My Experience With the Ultimate System & Which Package to Choose

ricardoginness · August 16

I’ve tried several traction devices over the years, and SizeGenetics is one of the traditional rod-based systems I’ve spent considerable time with.

When I bought mine, I went with the Ultimate System.

At first I wasn’t sure whether paying extra for Ultimate made sense. The cheaper SizeGenetics packages use essentially the same core traction device, so the obvious question is:

Why not just buy the cheapest version?

After using the system, I think the answer comes down to comfort, adjustment range, and how seriously you plan to use it.

If I were buying SizeGenetics again, I would still choose Ultimate.

Here’s why.

Check SizeGenetics Ultimate System & Current Packages

How SizeGenetics Works

SizeGenetics is a mechanical traction system.

The basic concept is actually very simple.

You place the device around the base, secure yourself at the front of the frame, and the adjustable rods create longitudinal tension.

Think of it as a controlled stretching frame.

The rods determine the overall length of the device, while the adjustment mechanism lets you progressively control tension.

This simplicity is actually something I like about SizeGenetics.

There is no complicated vacuum pump or electronic system to understand. Once you learn how to put it on correctly and find a comfortable configuration, daily use becomes fairly straightforward.

But there is one thing I would emphasize from my own experience:

Comfort matters much more than beginners expect.

You’re not buying something that you use for five minutes.

Traction is based around consistent wear over time. Therefore, the difference between a setup you can comfortably keep using and one you constantly want to remove becomes very important.

And this is one of the reasons I bought Ultimate.

SizeGenetics Value Edition — The Cheapest Way In

The SizeGenetics Value Edition is the entry-level option.

At the time I’m writing this, SizeGenetics lists it below both Comfort and Ultimate.

But here's the important thing:

You're not getting a completely different traction device.

The core mechanical concept is the same.

That makes Value interesting if your main priority is simply getting into the SizeGenetics system for the lowest possible cost.

I would consider Value if:

you have never used a traction device before
budget is the main consideration
you want to test whether this type of system fits your routine
you don't care about getting every accessory immediately

So Value isn't a "bad" SizeGenetics.

It's essentially the basic route into the platform.

However, personally, I wouldn't choose it if I already knew I was going to use the device seriously for several months.

The reason is simple: I would rather have the comfort and adjustment options available from the beginning.

SizeGenetics Comfort Package — Probably the Sweet Spot for Most People

The next step is the SizeGenetics Comfort Package.

And this is probably the package I would recommend to someone who doesn't want to pay for Ultimate but also doesn't want the most basic configuration.

As the name suggests, this version places more emphasis on comfort during longer sessions.

That's important.

When you first see these devices online, it's easy to concentrate on maximum tension, bars and specifications.

Once you actually start using one, your priorities change.

The question becomes:

Can I actually wear this consistently?

That's why I think Comfort is more interesting than Value for a lot of first-time buyers.

You're still getting the same fundamental SizeGenetics approach, but you're buying into a configuration intended to make longer wear more manageable.

For a casual user, this may be all you ever need.

SizeGenetics Ultimate System — What I Bought

I personally bought the SizeGenetics Ultimate System.

This is the most complete standard SizeGenetics package.

The Ultimate isn't fundamentally more powerful because of some completely different core mechanism.

What you're paying for is the complete setup.

The current Ultimate package includes the main traction unit together with:

full elongation-bar set
dual-function front piece
silicone tube
comfort strap
protection pad
No-Slip Protech
3M comfort material
Accellerate moisturizer
traction talcum powder
leather storage case
Quick Start Guide

The complete bar set is particularly useful because it gives you more room to adjust the physical length of the frame as your setup changes.

The current set includes:

2 × 0.5-inch bars
2 × 1-inch bars
4 × 2-inch bars

That allows much finer progression than being stuck with only a limited configuration.

Why I Chose Ultimate

My thinking was pretty straightforward.

If I was going to commit to using SizeGenetics, I didn't want to discover a month later that I needed another comfort part or another set of bars.

I'd rather have everything from day one.

And after using traction devices myself, I think that decision makes even more sense.

You gradually learn what works for you.

At first, you're mainly figuring out:

how to position everything
how tight the front attachment should be
which comfort setup works best
how much tension feels manageable
how long you can realistically wear it
how to increase the frame length gradually

Having more adjustment options makes this experimentation easier.

That's the biggest advantage of Ultimate in my opinion.

It's not that every accessory in the box is absolutely essential.

It's that you don't have to stop your progression because you're missing something.

See the SizeGenetics Ultimate System Here

How I Would Start With SizeGenetics

One mistake I wouldn't make is trying to maximize tension immediately.

SizeGenetics itself provides a progressive six-week Slow Start-Up schedule with the Ultimate package.

I think that general philosophy is correct.

The first objective should be getting used to wearing the frame.

There is a learning curve.

You have to figure out the attachment, positioning and tension level that you can actually tolerate comfortably.

So my approach is:

First → learn how to wear it comfortably.

Then → increase your wearing time.

Then → gradually adjust the rods and tension.

Not the other way around.

Trying to make the device as long or tight as possible on day one completely misses the point of a long-term traction routine.

Consistency matters more to me than chasing maximum tension.

Value vs Comfort vs Ultimate — Which One Would I Buy?

Here's how I see the three main packages.

Value Edition

Choose Value if price is your main concern.

It's the version I'd choose if I simply wanted to test this type of traction before committing more fruits.

Comfort Package

Choose Comfort if you already expect to wear the device for longer sessions but don't necessarily need every accessory SizeGenetics offers.

For many people, I think this is the best compromise.

Ultimate System

Choose Ultimate if you're already committed to giving traction a serious try.

That's what I bought.

You get the complete bar range, comfort equipment and other useful extras immediately.

For me, the extra cost was worth avoiding the situation where I started with Value and then slowly purchased additional parts anyway.

What About the Curvature Edition?

SizeGenetics also currently sells a dedicated Curvature & Peyronie's Edition.

It uses the same underlying straight longitudinal traction principle but is packaged specifically around curvature-focused guidance.

I wouldn't simply choose this version because it sounds more advanced.

If your goal is general traction, I'd stay with Value, Comfort or Ultimate.

If you're considering traction specifically because of significant or painful curvature, that's a different situation and one I'd discuss with a urologist rather than treating it purely as a package-selection question.

Is Ultimate Actually Worth the Extra?

For me — yes.

But not because Ultimate somehow transforms SizeGenetics into a completely different device.

That's probably the most important point in this entire review.

You're paying for completeness.

Value gives you the essentials.

Comfort improves the experience for longer wear.

Ultimate gives you the full setup from the beginning.

If someone told me:

"I don't know whether I'll actually use this regularly."

I'd say buy Value or Comfort.

But if someone told me:

"I've already decided I'm going to follow a long-term traction routine."

I'd choose Ultimate.

That's exactly why I bought it myself.

What I Like About SizeGenetics

The biggest advantage for me is simplicity.

It's a traditional mechanical design.

Once you've assembled it and learned your preferred configuration, there's relatively little to think about.

You adjust the frame, secure it, establish appropriate tension and go about your session.

I also like the modular rod system.

The small 0.5-inch and 1-inch sections become useful because progression doesn't always happen in huge steps.

Being able to change the physical frame gradually is much more practical.

What I Don't Like

There is definitely a learning curve.

The front attachment is probably going to be the part most beginners spend time figuring out.

You can have a perfectly good mechanical frame, but if you can't get the attachment comfortable, you're not going to want to wear it for long.

That's another reason I wouldn't obsess over maximum tension.

In my experience with this category, the best configuration isn't necessarily the one that produces the strongest pull.

It's the one you can actually use consistently.

The traditional rod frame also isn't as discreet as some newer all-day systems.

So you need to think realistically about when and where you'll use it.

For me, SizeGenetics makes the most sense when I can dedicate proper time to a traction session rather than trying to hide the device during every part of my day.

My SizeGenetics Recommendation

If I were buying again today, my choice would still be the SizeGenetics Ultimate System.

Not everyone needs Ultimate.

My simple buying guide would be:

Lowest-cost entry → Value Edition

Better setup for longer wear → Comfort Package

Complete setup / my personal choice → Ultimate System

Curvature-specific purpose → Curvature & Peyronie's Edition

For someone completely new who isn't sure they'll stick with traction, Comfort probably offers the most sensible middle ground.

But I already knew I wanted to use SizeGenetics seriously, which is why I went directly to Ultimate.

And knowing what I know now, I wouldn't downgrade.

Check SizeGenetics Packages & Ultimate System

The main lesson from my experience is simple:

Don't choose a SizeGenetics package based only on which one is cheapest or which box contains the most parts.

Think about how seriously you're going to use it.

If you're experimenting, start smaller.

If you're committed to a longer routine, having the full Ultimate setup from the beginning makes much more sense.

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