Your Joyseat was created around your anatomy, riding style and personal data. TriMesh takes that same custom foundation and gives us more precise control over how the padding moves beneath you. The result is a new 3D-printed lattice designed to respond more naturally to the movement of the pelvis while maintaining progressive support under load. It is stronger by design, softer by intention—and it will not become available to the wider public until August 6, 2026.
A cycling saddle has a difficult job.
It needs to provide support without feeling rigid. It needs to move with the rider without becoming unstable. It needs to distribute pressure while remaining predictable through hours of pedaling, changing positions, rough surfaces and repeated impacts.
And because every rider is different, there is no single pattern of stiffness that works equally well for everyone.
That is why Joyseat has always been built around customization. We use each rider’s anatomy and riding data to adjust the saddle’s size, shape and stiffness—not simply to select the closest option from a standard range.
TriMesh is the next step in that work.
It is a newly developed 3D-printed lattice architecture that gives us finer control over how different parts of the saddle move and provide support. Its triangular cell structure has been engineered to work as one connected surface, responding progressively beneath the rider rather than behaving like a collection of separate soft and hard zones.
The wider public will meet TriMesh on August 6. As a recipient of our private newsletter, you are learning about it before its official release.
More movement—but what does that actually mean?
One of the main figures from our testing is that TriMesh provides approximately 28% more controlled travel than our current lattice.
The word “travel” can be confusing. It does not describe the rider sliding around on the saddle, and it does not mean that the padding moves unpredictably.
It refers to how far the lattice compresses and responds under a defined dynamic load.
During testing, TriMesh showed approximately 1.13 mm of dynamic travel, compared with approximately 0.88 mm for our current lattice.
That difference is deliberate.
The additional working travel allows the structure to respond more progressively beneath the sit bones and follow the small, continuous movements of the pelvis during pedaling. Instead of resisting those movements with an abrupt or overly firm response, the lattice compresses in a more controlled way and distributes the load across the padding surface.
In practical terms, TriMesh is designed to:
- Follow pelvic movement more naturally.
- Absorb repeated impacts and vibrations more progressively.
- Spread load across the saddle surface.
- Reduce the sensation of isolated firm or soft spots.
- Maintain support without feeling loose or excessively springy.
So, no—the rider is not moving 28% more across the saddle.
The lattice has approximately 28% more usable movement under load, and that movement is engineered to remain smooth, stable and controlled.
Not simply softer
A softer saddle is not automatically a more comfortable saddle.
If the padding compresses too easily or too deeply, the rider may lose support. The saddle can begin to feel unstable, vague or “hammock-like”. Softness without control can also concentrate pressure rather than distributing it.
TriMesh was not developed to make Joyseat simply softer.
It was developed to make the padding more adaptive.
The full surface is designed to work together. As the rider pedals, changes position or moves across uneven terrain, the lattice responds progressively while continuing to support the areas that carry the greatest load.
Professional riders and experienced ambassadors repeatedly described the result as:
- Softer, without losing support.
- Calmer beneath the rider.
- More connected and adaptive.
- More natural in the way it distributes pressure.
- Easier to forget during the ride.
One test rider summarized the sensation simply:
“The whole padding works as one. Softer, more adaptive and easier to forget beneath me.”
Individual saddle feel will always remain subjective. Riding position, anatomy, bike setup, discipline and personal preferences all influence what a rider experiences. But the consistency of this feedback gave our development team a clear indication that the mechanical changes were translating into a noticeable difference on the bike.
Every triangle has a purpose
The name TriMesh comes from the triangular cells that form the new lattice architecture.
Their role goes far beyond appearance.
By changing the size, density, orientation and placement of these cells, our engineers can control how different areas of the padding behave.
That allows us to create:
- More compliance beneath sensitive areas.
- Progressive support beneath the sit bones.
- Controlled movement around the rails and structural transition zones.
- Smoother changes between softer and more supportive parts of the saddle.
This is especially important in a fully custom saddle.
The goal is not to create one universal lattice and print it in several sizes. The goal is to give our customization system a more precise mechanical foundation from which each individual saddle can be generated.
A rider does not need the same level of support everywhere. The area beneath the sit bones has a different job from the nose, the central section or the transition towards the rails.
TriMesh gives us greater freedom to tune those areas while keeping them connected as one working structure.
Stronger by design. Softer by intention.
Numerical simulation showed a structural stiffness potential of 53.9 N/mm for the TriMesh architecture, compared with 32.8 N/mm for the previous architecture.
That represents a 64% increase in structural stiffness potential.
But this needs careful explanation.
It does not mean that the finished saddle feels 64% harder.
The figure describes the potential of the underlying architecture. A stronger and more predictable structural foundation gives our engineers more headroom when tuning the final saddle.
Think of it as gaining a wider adjustment range.
Because the underlying geometry is more structurally capable, we can introduce compliance where the rider needs movement while maintaining support in areas exposed to higher loads. We can create softer sections without making the whole surface unstable, and firmer sections without introducing abrupt transitions.
The structural strength provides control. The final tuning determines the feel.
Tested through 1.7 million accelerated load cycles
A new lattice cannot be judged by its first few rides alone.
We also needed to understand how TriMesh would behave after prolonged, repeated loading.
In laboratory testing, TriMesh completed 1.7 million continuous load cycles at 5 Hz without structural failure.
Five hertz means that the test machine applied 300 loading cycles every minute. The load continued without coasting, stopping, standing out of the saddle or introducing unloaded sections.
This is not the same as normal outdoor riding. It is intentionally concentrated and repetitive, allowing us to observe how the structure changes under accelerated cyclic stress.
The deformation curve changed most rapidly during the initial break-in phase. It then progressively flattened and began to stabilize.
Within the measured testing window, we did not observe an accelerating decline or sudden failure signal.
After 1.7 million cycles, we cut the saddle open.
The TriMesh lattice remained:
- Structurally intact.
- Elastic.
- Fully functional.
- Free from hidden structural failure.
This post-test inspection matters. Looking only at the external surface would not have shown us whether damage had developed inside the lattice.
Does greater movement mean faster wear?
No. The additional movement is designed compliance.
TriMesh does not move more because it is breaking down more quickly. It moves more because its architecture has been developed to provide a larger, controlled working range.
The deformation curve showed its fastest change during the initial break-in period and then progressively stabilized. The lattice remained intact after accelerated testing and post-test inspection.
We also compared TriMesh with an anonymized premium foam benchmark under the same accelerated cyclic test.
At the end of that test, TriMesh showed approximately 15% less dynamic deformation than the foam benchmark.
This does not make lattice and foam identical materials, nor does one test describe every aspect of long-term saddle performance. It does, however, show that a more adaptive structure does not necessarily mean a less stable one.
Engineered for an expected service life of 30,000+ km
The 1.7 million measured laboratory cycles correspond to approximately 8,850 km of continuous theoretical pedaling, based on 80 rpm and a speed of 25 km/h.
The laboratory applied loading continuously at 5 Hz, with no:
- Coasting.
- Stops.
- Standing.
- Lower-frequency periods.
- Unloaded sections.
Normal riding is much more variable. Riders coast, stand, change effort, stop at junctions and spend periods placing less direct load on the saddle.
Based on the accelerated cyclic test, post-test inspection and extrapolation of the stabilizing deformation curve, TriMesh is engineered for an expected service life of 30,000+ km under normal riding conditions.
The projection indicates approximately 1.28 mm of dynamic travel at 30,000 km, still within a controlled range and without a projected failure signal.
The 30,000+ km figure is an internal engineering estimate. It is not a guarantee, a warranty equivalent or a claim that one saddle was ridden for 30,000 km during testing. Actual service life will depend on rider weight, conditions, care, use and other variables.
What the testing gives us is confidence that the extra movement engineered into TriMesh is compatible with long-term structural stability.
Indoor riding: concentrated load, heat and sweat
Indoor riding creates a particular challenge for saddles.
The rider often remains seated for longer, the bike moves less beneath the body, airflow is reduced, and the combination of heat and sweat can be intense. This creates a concentrated and repetitive loading environment.
One TriMesh saddle was therefore used by two riders on a dedicated Zwift bike.
The test included:
- 92 indoor sessions.
- 77.5 hours under load.
- Approximately 370,000 pedal revolutions.
- Thousands of indoor kilometers.
The riders completed repeated seated efforts under heat, sweat and concentrated indoor loading.
Once again, we cut the saddle open after the test.
No structural damage was found. The lattice remained intact and fully functional.
Tested beyond the laboratory
Laboratory results are essential, but they cannot fully reproduce the complexity of real riding.
TriMesh was also tested by approximately 30 professional riders and experienced ambassadors across multiple disciplines.
The test program included gravel specialists using TriMesh at demanding events such as Unbound Gravel and The Traka, as well as road riders from UCI Continental teams. The saddles were used during training camps, stage races and national championships.
Cyclocross riders tested TriMesh through short, intense races involving repeated impacts, aggressive position changes and difficult surface conditions.
The purpose was not simply to gather positive quotes. It was to expose the structure to different riders, disciplines, positions and patterns of loading.
A gravel race presents a different challenge from a road stage race. A cyclocross event asks something different again. Indoor training removes many of the natural unloading moments found outside.
Bringing these environments together helped us evaluate whether TriMesh behaved predictably beyond a controlled laboratory setup.
What riders noticed
Across the test group, the most common feedback was not that the saddle felt dramatically soft.
It was that the response felt more connected and natural.
Riders described:
- More adaptive cushioning.
- More natural pressure distribution.
- Less noticeable individual pressure points.
- Progressive support beneath the sit bones.
- A softer initial sensation without losing support.
- A saddle that became easier to forget beneath them.
That final point matters.
The ideal saddle does not demand attention on every ride. It supports the rider without becoming the main subject of the experience.
TriMesh was engineered around that ambition: not softness for its own sake, but controlled movement that helps the saddle work more naturally beneath a moving body.
What does TriMesh mean for your current Joyseat?
Your current Joyseat remains a premium, fully custom saddle created around your anatomy and riding data.
TriMesh does not mean that the previous lattice was defective or that your current saddle is suddenly less capable. Product development does not work that way.
Every generation gives us information that supports the next one. Testing, rider feedback, new simulations and manufacturing experience allow us to refine what we already know.
TriMesh is the latest result of that continuous process.
It gives our engineers:
- A stronger and more predictable lattice architecture.
- More precise control over local stiffness and compliance.
- A larger controlled working range.
- Smoother transitions across the padding surface.
- A new foundation for individually tuning each saddle.
The principles behind Joyseat remain unchanged: size, shape and stiffness are still created around the individual rider.
TriMesh expands what we can do within that custom process.
Private access before August 6
TriMesh will become available to the wider public on August 6.
Until then, access is being introduced gradually to selected existing Posedla customers.
That means you are reading about our new lattice before its official public release.
We wanted our earliest riders to understand more than the headline numbers. You helped us build, test and refine the idea that a saddle should adapt to the rider—not ask the rider to adapt to it.
TriMesh is the next chapter of that work.
More movement where your body needs it. Progressive support where it matters. Every triangle working towards the same goal.
Stronger by design. Softer by intention.
