Technomule
A slip-on for Berlin club nights, made to be 3D printed in one piece. Speaker rings underfoot, a draped wave upper and soft volumes for nights that run into the next afternoon.
BerlinAt the club door. Vizcom render.
01 · The idea
Built for the night.
A Berlin club night can run into the next afternoon. Most of it you spend standing and dancing, on concrete.
TECHNOMULE is the shoe for that stretch, from the club door to the last track: easy to slip on, soft where the foot takes the hours, and bold enough to belong on the dancefloor.
The brief: reimagine the closed-toe mule on Zellerfeld’s last and template, printable in one material, with little or no cut-outs.
“Endless comfort during endless club nights.”
The idea in one line
02 · Form
Bass, body, street.
Four drivers shape one surface. At work I sometimes design surface textures for injection moulding; here I used the same logic with the freedom of a print, so it can drape and ripple in ways a mould would struggle to release.
Dot texture and outsole rings, up close
- 01Speakers and bass
Concentric rings under heel and forefoot like speaker cones; the upper ripples like a bass wave.
- 02Made for long nights
Rounded, padded volumes around the toes and heel, designed for hours of standing and dancing.
- 03Berlin streets
Matte black for concrete, cobblestones and the club door at night.
- 04Parametric, imperfect
A parametric dot texture over a form that drapes like fabric, slightly irregular on purpose, so no two waves are the same.
All images on this page are Vizcom renders, art directed with prompts.
03 · Process
Art directed by prompt.
The whole shoe was art directed in Vizcom with prompts and references, starting from Zellerfeld’s template. The challenge was my excuse to move from Midjourney and ComfyUI to Vizcom.
04 · Colourways
Black first, then four revisions.
Black is the Technomule: matte, made for concrete, cobblestones and the club door.
Bone, lilac, red and grey came after, as a CMF test: how quickly Vizcom turns one finished form into colour and material revisions. That test was one of my main goals for the challenge. All five would print from the same file.
05 · In motion
Cut for the phone.
A 13-second vertical film, generated in Vizcom and cut in CapCut, made for the format people would first see it in.
Film · Vizcom, cut in CapCut. Sound off.
06 · Outcome
Made to be printed, not moulded.
A one-piece mule that stays inside Zellerfeld’s template and print rules: padded volumes for long nights, speaker rings for grip on the dancefloor, and a dot texture that hides print layer lines. The challenge also did what I set it up for. It moved my workflow from Midjourney and ComfyUI to Vizcom, which gave me more control over form and CMF revisions and a faster route to film. Afterwards I made Blinded to test the other way round: starting from my own base sketch.
DesignJordan Groskamp: concept, prompts, art direction and film
ChallengeVizcom × Zellerfeld Mule Design Challenge, March 2026
ToolsVizcom, CapCut
MaterialOne piece of printed TPU, Zellerfeld’s zellerFOAM (concept)
Next project · 04 / Footwear
The moment before something is madeAfter Michelangelo, The Creation of Adam, Sistine Chapel, 1508 to 1512