At the International Bike Festival, Selle Italia introduced Unica, a 3D-printed saddle line whose internal cushioning structure is generated from an individual rider's own pressure-mapping data rather than pulled from a catalog of pre-set firmness zones. The saddle looks identical to the next one off the line. What's different is buried inside it: a lattice calibrated, cell by cell, to how one specific body loads a seat.
3D-printed lattice saddles aren't new — several manufacturers have shipped saddles and shoe midsoles with printed elastomer structures for a few years now, typically offering a handful of firmness options or zone-based tuning across a saddle's length. Unica's pitch is narrower and more literal: not a size chart, not a firm/medium/soft SKU split, but a saddle where the density map is derived directly from that rider's measured pressure distribution and, as far as the company describes it, not shared with anyone else's.
How the Fitting Actually Works
Getting a Unica saddle isn't a checkout-page configuration — it's a clinical visit. Per Selle Italia's own product page and reporting from VoxelMatters, the process runs through several discrete steps at an authorized Unica center:
- Biomechanical analysis. A qualified bike fitter at the center uses a digital camera to capture the rider's position and posture on the bike, establishing the baseline the pressure scan is then measured against.
- Pressure mapping. Selle Italia's idmatch Pressure Map System records load zones across the sit bones and surrounding tissue while the rider is in that position — not a static seated impression, but a scan taken in something closer to actual riding posture.
- Data upload. The resulting map is uploaded to the idmatch portal, and the order is tracked through the my.idmatch app.
- Printing. The saddle is 3D printed with densities calibrated to that individual load pattern — softer where pressure concentrates, firmer where it doesn't, according to the recorded data rather than a generic template.
- Delivery and fitting. The finished saddle arrives roughly three weeks after the scan, and Selle Italia specifies a fitting session back at the center before the rider takes it out on the road.
Unica is offered on two existing Selle Italia platforms — the SLR 3D and the Novus Boost Evo 3D — each available with carbon or "Elite" rail options. In other words, the customization is happening entirely inside a known, already-released shell rather than as a wholly new saddle geometry designed around each customer.
Same Shell, Different Guts
That shell consistency is the detail Selle Italia is most explicit about. As the company put it in comments reported by VoxelMatters, the external shape of a Unica saddle stays constant across every unit produced — "only the internal 3D printed padding differs from unit to unit," with stiffness varying according to each rider's recorded load pattern. That's a meaningfully different customization model than, say, a custom-molded orthotic or a fully bespoke frame, where the whole outer form changes to match the person. Here, the surface geometry — length, width, nose profile, the parts that determine how the saddle interacts with shorts, positioning, and aesthetics — is fixed. Only the lattice inside the padding, invisible once the saddle is assembled, is unique to the buyer.
That's a deliberate engineering tradeoff, not a limitation Selle Italia is hiding. Keeping the shell constant means the company doesn't have to re-validate an entirely new saddle profile for every customer, and it means riders who already know they like the SLR 3D or Novus Boost Evo 3D shape aren't gambling on an unfamiliar form factor. What Unica changes is the one variable that's historically been hardest to get right without trial and error: how the padding actually compresses and distributes load under a specific person's anatomy.
What It Means for Makers
For anyone printing TPU or lattice structures on desktop machines, Unica is a useful data point on where the manufacturing industry is taking an idea the maker community has been experimenting with informally for years: pulling a lattice's local density straight from measured load data instead of hand-tuning infill patterns by eye. The zone-based approach seen in some earlier printed saddles and midsoles — a handful of discrete regions, each with a fixed infill percentage — is essentially a coarse, manual version of what Unica claims to automate with a pressure scan feeding directly into per-cell density. It's also a plausible preview of where lower-cost tooling eventually goes: as pressure-mapping and motion-capture hardware gets cheaper, the same individualized-density workflow becomes conceivable outside a manufacturer's authorized fitting network — for anyone with a scanner, a slicer that supports variable infill, and the patience to map a lattice by hand instead of by algorithm.
The workflow itself is also worth noting for anyone thinking about print-on-demand customization businesses: this isn't an app where a customer enters their weight and preferred firmness. It requires a physical scan at an authorized location, a defined data pipeline (idmatch portal, my.idmatch tracking app), and roughly a three-week turnaround between measurement and delivery — plus a mandatory in-person fitting before the product is used. That's a meaningfully higher-friction model than most direct-to-consumer customization, and it signals that Selle Italia is treating the pressure data as something that needs professional capture and interpretation rather than a self-service input field.
It's also worth flagging what isn't in the public materials: no published pricing, mesh resolution, printer or material specifics, lattice cell topology, or independent third-party testing of how the pressure-derived padding compares to a standard foam saddle in ride quality or durability. Anyone weighing a Unica saddle against a standard SLR 3D or Novus Boost Evo 3D will be doing so without a cost comparison or a ride-quality benchmark to reference — both gaps a reviewer would need to close before recommending one over the other. The company's warranty terms are concrete, though — Unica includes an extra year of coverage on top of standard warranty terms, along with a crash policy offering a 70% discount voucher on a replacement within the first week of ownership and 35% within three years, which suggests some confidence that a printed lattice can hold up to real-world wear, or at least that Selle Italia is willing to underwrite the risk.
