Patented sole technology · Licensed to footwear brands

Stability without
stiffness.

Every stability shoe buys support by making the sole harder. FIRMO doesn't. A patented strut array holds the foot laterally while the forefoot bends the way it wants to.

Licensing modelsHow it works
Exploded FIRMO sole: strut array, midsole, bridge element and outsole as separate parts15

FIG. 01 — EXPLODED VIEW · FIRMOFLEX (1) · FIRMOBRIDGE (5)

Core patent
FIRMOFLEX®
Transfer element
FIRMOBRIDGE®
Supply format
Bonded component
In market
VENTU RUN
FIG. 02The trade-off

A sole has two jobs that work against each other.

It has to stop the foot rolling sideways, and it has to let the foot bend at push-off. The conventional answer is a stiffer plate — which does both at once, and does the second one badly. FIRMOFLEX treats them as separate axes.

Conventional — support plate

Frontal
stiff
Sagittal
also stiff — flexion blocked

FIRMOFLEX® — strut array

Frontal
stiff
Sagittal
free — gaps open at toe-off
FIG. 03FIRMOFLEX®

firmoflex· patented

Directional stiffness, built into the geometry.

  1. 1

    Struts span the width

    Each strut acts as a beam across the sole. Lateral load is carried across the full width instead of collapsing into the foam.

  2. 2

    Gaps stay open

    The spaces between struts let the sole hinge in the direction of travel. Flexion is unrestricted at toe-off.

  3. 3

    The fan follows the joint line

    The forefoot's natural flex axis runs obliquely across the metatarsal heads. The struts fan to match it instead of cutting across it.

  4. 4

    Bonded, not moulded in

    Supplied as a finished part and bonded into the midsole cavity. No new tooling on the licensee side.

One geometry, two answers.

Sagittal — free

The forefoot hinges in the direction of travel. The gaps between the struts open — nothing resists the bend.

Frontal — held
FOAM

Conventional0° — tilts away

FIRMOFLEX®0° — holds

Same foam · Same weight· Different stiffness per axis

FIG. 04FIRMOBRIDGE®

firmobridge· registered

The midfoot is where force leaks out.

  1. 5

    Continuous span

    One element bridging rearfoot and forefoot, so the load path doesn't break at the arch.

  2. 6

    Guided roll-through

    Shapes the transition from landing to push-off rather than leaving it to foam compression.

  3. 7

    Works with the array

    Bridge delivers force to the forefoot; the strut array keeps it stable once it arrives.

FIG. 05Assembly

Four layers, one load path.

FIRMOFLEX and FIRMOBRIDGE are supplied as discrete parts and bonded into the midsole. Everything above and below stays the licensee's decision — foam, geometry, outsole compound, aesthetics.

  1. 01

    FIRMOFLEX®

    Bonded strut array in the forefoot.

  2. 02

    Reactive EVA

    Low-density cushioning carrier. Spec adjustable.

  3. 03

    FIRMOBRIDGE®

    Midfoot span. Keeps the load path closed.

  4. 04

    Outsole

    Abrasion-resistant rubber. Tread to licensee's design.

FIG. 06Applications

Anywhere the foot has to stay stable for a long time.

The principle isn't category-specific. Wherever a sole has to resist lateral load without locking the forefoot, the geometry applies — strut count, spacing and durometer are tuned to the case.

  • A

    Performance running

    Stability without the forefoot restriction of a conventional support plate.

    → In market today

  • B

    Walking & comfort

    All-day support and secure footing, in a construction that stays light and flexible.

    → Highest volume potential

  • C

    Workwear & safety

    Footing on uneven ground across a full shift. Compatible with toe caps and penetration layers.

    → EN ISO 20345 assessment open

  • D

    Outdoor & hiking

    Torsional stability under pack load, without the weight of a full-length shank.

    → Weight saving vs. shank

FIG. 07IP & Evidence

Protected, registered, in production.

Core patent
FIRMOFLEX®To be confirmed:Patent no. · filing date · territories
Trademark
FIRMOFLEX®To be confirmed:Register no.
Trademark
FIRMOBRIDGE®To be confirmed:Register no.
Market status
VENTU RUNIn production · in market

Claim substantiation

LevelClaimEvidence source
MechanicalFrontal-to-sagittal stiffness ratio at equal mass and foam densityTo be confirmed:Bench flex test protocol
BiomechanicalReduced peak eversion versus neutral control shoeTo be confirmed:Instrumented gait study
DurabilityBond-line integrity over repeated flex cyclesTo be confirmed:Cyclic flex endurance test
PerceivedStability perception versus incumbent stability shoesTo be confirmed:Structured wear-test panel

Evidence entries are shown as pending until the corresponding test is scheduled or complete. Full protocols and data are released with the technical dossier.

FIG. 08Licensing

Three ways in.

Because both parts are bonded rather than moulded in, the entry barrier is low: the fastest model needs no tooling investment on your side at all.

A★ Fastest route

Component supply

We manufacture and ship the finished parts. You adapt the midsole cavity and bond them in. No tooling investment, no process development.

  • Per-part pricing
  • No tooling
  • Fastest to sample
B

Technology licence

You manufacture to our specification at your own facility. Royalty per pair, with our QA protocol and material spec as binding conditions.

  • Royalty per pair
  • Own production
  • QA bound
C

Category exclusivity

Exclusive rights in a defined category or territory against a minimum annual volume.

  • By category
  • By territory
  • Minimum volume

Every licence includes

  • Patent licence
  • Trademark usage rights
  • CAD & tooling data
  • Material specification
  • Bonding process sheet
  • QA protocol
  • Test data package
  • Hangtag & brand assets
  • POS kit
  • Engineering support
FIG. 09Reference build

First production application

It's not a concept. It's in a shoe you can buy.

The VENTU RUN is the first production application of the full system. For a licensee that matters: the geometry is proven at production tolerances, the bonding process is validated on a real line, and the part cost is known rather than estimated.

Geometry
Production tolerances
Bonding
Validated in series
Part cost
Known, not estimated
VENTU RUN production shoe, outsole view with visible FIRMOBRIDGE element
FIG. 10Dossier request

Request the technical dossier.

Everything a product team or an investor needs to evaluate the system — released under NDA to footwear brands, manufacturers and investors.

  • Patent documentation & claim scope
  • Material specification
  • CAD & tooling data
  • Bonding process sheet
  • Test data package
  • Indicative licence terms

Released under NDA · Response within two business days

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