0The saddle is arguably the most critical and frustrating contact point on a bicycle. For decades, the industry standard has been “trial and error”—buying off-the-shelf shapes and hoping your anatomy conforms to the plastic.
In this video, we explore a technical shift: Additive Manufacturing (3D Printing) driven by biometric data. We take a deep dive into the Posedla “Joyseat” process, moving from the analog (the “Smiling Butt” foam impression) to the digital (flexibility and mobility data), and finally to the physical (a custom-mapped carbon lattice). This isn’t just about a new seat; it’s about a closed-loop system designed to remove the guesswork from bike fitting.
In this technical look, we cover:
The Input: How the “Smiling Butt” kit captures sit-bone geometry and pelvic tilt.
The Translation: Turning personal mobility and riding style into a 3D-printable file.
The Output: A first look at the Joyseat 3.0—why a T-shaped design and a bespoke lattice change the ride feel.
The Field Test: Taking the custom build on a 140km “all-road” test from Kendal to Lockerbie in typical British conditions.
The Result: Why 3D printed saddles handle water better than traditional foam and the long-term “one-and-done” investment.
Is the future of cycling comfort found in a printer? We’re keen to hear your thoughts on custom-mapped tech in the comments.
#Mapdec #3DPrinting #BikeFitting #CyclingTech #Posedla #BespokeCycling
📍 Video Chapters (Timestamps)
00:00 The “Smiling Butt” Kit: Capturing the Data
00:44 The Digital Questionnaire & Mobility Tests
01:35 Making the Impression: The Process
03:22 Setting the Baseline: Current Saddle Geometry
04:46 Measuring Flexibility & Hamstring Tension
06:10 Custom Branding & Aesthetic Choices
07:03 Tricking the System? Honesty in Data
08:51 Unboxing the Joyseat 3.0: Anatomy in Carbon
10:07 Field Test: Kendal to Lockerbie (140km)
12:55 A Quick Note on Edible Packaging…
15:01 Post-Ride Analysis: Comfort vs. Discomfort
16:50 The 3D Lattice: Water Drainage & Tech Specs
18:30 Cost vs. Value: The “Trial and Error” Tax
19:32 How to Integrate Custom Saddles into a Bike Fit
20:18 The Future of Contact Points
13 Comments
Excellent
I don't ride with a chamois pad…
Sending pics of your arse over the internet, no, just no! 😮😂
Is this info stored on a server? I’m just wondering if one day a print of my “saddle” could end up as some kind of adult toy for guys lol.
I would like to see James bike fit review it.
this is exactly how I imagine british cycling weather
I've tried so many saddles in 36 years of riding. Haven't found a great one yet. I think my skinny ass just doesn't have enough padding. Even with chamois.
Thinking of riding 4+ hours in a performance position without shorts with chamois brought tears to my eyes 😅
Same shit as usual. Do you sit like this on your bike? Sorry, forgott. Thats just advertizing scam.
That's not how you sit on a bike. There's no way this a proper saddle.
GBP470 is eyewateringly expensive for a saddle.
Lockerbie? As in Pan Am flight 103. RIP to those 259 souls.
Very interesting video btw, I wasn't previously aware of this custom saddle company. Thanks for the detailed evaluation.
Off to the local florists to have my backside pressure mapped into their floral foam block for peace of mind ………..then ordering a ryet full carbon incl rails for fifty quid delivered,
off Alu- espresso. …….Is this illustrated proposition a genuine market offering ?