What a TPMS lattice structure is and why it matters in insoles

TPMS stands for Triply Periodic Minimal Surfaces — a family of mathematical surfaces that, when replicated, form an internal repeating structure with exceptional mechanical properties. Applied to an insole, they let its behavior vary across zones without the outer geometry changing.

Why TPMS and not a standard honeycomb

A classic honeycomb has constant stiffness. TPMS lets every cell have a different size, thickness and orientation, which translates into an insole that's stiff under the arch and soft under the heel — all in a single printed part.

Mechanical advantages

• Uniform pressure distribution
• Stiffness variable per zone
• Lightweight with high strength
• Fatigue-resistant (long-term use)
• Durability beyond foam or EVA

How ELISA designs it

The professional never handles the TPMS geometry directly. They select the usage mode (medical, sports, comfort) and define stiffness per zone. The algorithm generates the optimal lattice across the insole shell, ready to print.