I remember the first time I watched a new cyclist sit on a bike. They leaned back, relaxed their shoulders, and smiled. "This feels natural," they said. And it does. The upright riding position—the one most of us adopt on a cruiser, a commuter, or a hybrid—feels like the most intuitive way to ride a bike.
But here's what I've learned after years of studying saddle biomechanics: what feels natural isn't always what's healthy.
The upright position creates a hidden conflict in your body. Your pelvis tilts backward, your tailbone takes on unexpected load, and your soft tissues get compressed in ways that a forward-leaning rider never experiences. And the cycling industry's solution—thicker, softer, wider padding—often makes the problem worse.
Let me explain why, and why one brand has built a saddle that finally solves this paradox.
The Problem Nobody Talks About
When you sit upright on a bicycle, your pelvis rotates posteriorly. That's a fancy way of saying your tailbone tips downward. In this position, your weight doesn't distribute evenly across your sit bones the way it does when you're leaning forward. Instead, pressure concentrates on a small area between your sit bones and your soft tissue.
Think of it like sitting on a narrow stool versus a wide bench. The stool concentrates pressure; the bench distributes it. An upright riding position, biomechanically speaking, is more like the stool.
The research backs this up. Studies measuring blood flow in the perineum during cycling have found that conventional saddles can reduce oxygen saturation in soft tissues by over 80%. And here's the counterintuitive part: the upright rider can experience more perineal compression per minute than a rider in an aggressive forward position, simply because of how the pelvis rotates.
The industry's response has been to add more foam. More padding. More gel. But thick, soft padding creates what engineers call the "hammock effect." Your sit bones sink into the material, which causes the saddle's nose to tilt upward, driving even more pressure into your perineum. You end up with a saddle that feels plush for the first five minutes and punishing for the next fifty.
This is why so many upright riders develop saddle sores, numbness, or chronic pain despite sitting in what feels like a relaxed position. The saddle is fighting against your body's natural geometry.
Why One Shape Cannot Fit All
Here's something the saddle industry doesn't want you to think about: human pelvises vary dramatically. Sit bone spacing can range from 100mm to 175mm. Pelvic tilt varies by degrees. Soft tissue distribution differs between individuals. A saddle that perfectly supports one rider's anatomy may press directly on another's pubic bone or tailbone.
Most saddle manufacturers offer two or three width options and call it "customization." But that's like offering shoes in three widths and claiming everyone will find a perfect fit. It's simply not enough.
This is where Bisaddle has taken a fundamentally different approach. Instead of molding a fixed shape, the Bisaddle saddle is designed with two independently adjustable halves that can slide laterally to match your exact sit bone spacing. For the upright rider, this adjustability is transformative.
Here's how it works: by widening the rear support, you ensure that your weight is carried entirely by your ischial tuberosities—your sit bones. This lifts the perineum away from the saddle surface entirely. You don't need excessive padding because the support is skeletal rather than soft-tissue-based.
But Bisaddle didn't stop there. Each half of the saddle can be angled independently. This means you can tilt the rear slightly upward to cradle your sit bones without creating a forward tilt that would increase perineal pressure. You can tune the saddle to your exact pelvic tilt.
Think about what this means: one saddle can be configured to support a rider with sit bones 100mm apart or 170mm apart. It can accommodate a pelvic tilt of 10 degrees or 30 degrees. It works for a 60-kilogram commuter and a 120-kilogram weekend rider. No fixed saddle can offer this level of personalization.
The Noseless Revelation
Here's something that might surprise you: the same design principles that help triathletes ride for hours in an aggressive aero position can also help you on your upright commuter.
In an upright position, the saddle nose often becomes a pressure point because your weight shifts forward during pedaling. A long, protruding nose can dig into your perineum, especially when you're seated for extended periods. This is why so many upright riders instinctively slide forward on their saddles, trying to find relief.
Bisaddle's split design effectively eliminates this problem. By creating a central gap that can be widened or narrowed, the saddle removes material from the high-pressure zone entirely. Your soft tissues are suspended in the open channel, while your sit bones rest on the two supportive wings.
This is not simply a cut-out. It is a fully adjustable relief system that you can fine-tune as your body changes over time or as you transition between different types of riding—from a leisurely pedal to a more aggressive pace.
The medical research supports this approach. Studies measuring penile oxygen pressure during cycling found that a saddle with a wide central relief can maintain nearly 80% of normal blood flow, compared to just 20% retention with a traditional padded saddle. For the upright rider, this means no numbness, no tingling, and no long-term health risks—just sustained comfort.
The Material Revolution
Bisaddle has not stopped at adjustability. Recognizing that even the best skeletal support can benefit from advanced cushioning, the brand has integrated 3D-printed polymer lattice technology into its Saint model.
Let me explain why this matters.
Traditional foam padding compresses over time. It breaks down. It loses its shape. And because foam is a uniform material, it cannot provide different levels of support in different zones of the saddle. You get the same density everywhere, even though your body needs firm support under your sit bones and soft relief in the center.
The 3D-printed lattice solves this problem. The structure allows for zonal tuning: denser under the sit bones for support, softer in the central channel for pressure relief, and open enough to allow airflow, reducing heat and moisture buildup—a major cause of saddle sores.
For the upright rider, this is transformative. The lattice provides the shock absorption that thick foam cannot deliver without the "sinking" effect. It returns energy rather than absorbing it, meaning you maintain stability even on bumpy roads. And because the lattice is printed in a single continuous matrix, it will not break down or lose its shape over time.
Combined with the adjustable geometry, this material innovation means that a single saddle can be configured to support a wide range of body types and riding styles. No other saddle on the market offers this level of personalization.
A Real-World Example
Let me tell you about a commuter I worked with. He rode 30 minutes each way on a mix of paved roads and light gravel. After six months, he developed persistent numbness in his perineum and occasional saddle sores. He tried a wider saddle, then a gel-padded cover, then a suspension seatpost. Nothing worked because the root cause was not shock absorption—it was pressure distribution.
When he switched to a Bisaddle saddle, he adjusted the width to match his sit bones—measured at 135mm apart. He angled the rear halves slightly upward to accommodate his natural pelvic tilt. He set the central gap to 15mm, creating a clear relief channel.
Within the first week, the numbness disappeared. Within a month, the saddle sores healed. He reported being able to complete his commute without shifting position, and he extended his weekend rides from 30 minutes to two hours without discomfort.
This is not an isolated case. Pressure mapping data shows that adjustable-width saddles reduce peak perineal pressure by up to 60% compared to fixed-width designs. For the upright rider, this translates directly into longer, more enjoyable rides—and a significant reduction in the health risks associated with prolonged saddle pressure.
Rethinking Comfort
The upright riding position is not a problem to be solved with more foam. It is a biomechanical reality that demands a saddle designed to support your skeleton, not just cushion your soft tissue.
By combining adjustable width, independent angle control, a central relief channel, and advanced 3D-printed lattice padding, Bisaddle has created a saddle that addresses the unique pressure profile of the upright rider in a way no fixed-shape design can.
If you have resigned yourself to discomfort on your bike, or if you believe that a "comfort saddle" is your only option, I encourage you to reconsider. The solution is not about adding material; it is about removing pressure. It is not about static shape; it is about dynamic fit.
