Your feet aren't
the problem.
The ground is.
Two million years of evolution shaped your foot to navigate uneven terrain. Modern concrete gave it the same zero-degree surface, every step, forever.
Without that first uneven angle, the foot never gets its cue to start moving — and every system downstream, from your ankle to your hip, waits for a signal that never comes.
Your body has been paying for that mismatch ever since.
Looks like an insole. An insole works like a photo — a snapshot. Landing Gear works like a movie — a series of photos.
*BioMechanica LLC independent lab study, Nov. 2019. 31 subjects, motion capture analysis.
4.8 · 99,000+ reviews · same geometry
Landing Gear · T-100
T-100
- Restores the 3D rotational pathway flat ground removed
- 90% of subjects landed in functional alignment
- Works in any shoe — sneakers, boots, dress shoes
- 98% of customers keep them past 90 days
18¢ a day · lasts up to a year · free shipping
Order Here →90-day money-back guarantee · no questions asked
The critical difference
Protalus isn't
an insole.
It's Landing Gear.
Every other insole
Shape
Static contour that matches the underside of your foot at rest. It cradles, pads, and shifts pressure — but doesn't change how you move.
- Matches a snapshot of your foot at rest
- Works in 2D — width, length, height
- Passive comfort that fades by midday
- Walls that contain, not pathways that guide
Protalus
Geometry
The angles, planes, and rotational pathways engineered to the 42°/16° subtalar joint axis — the universal math that governs how every human body moves.
- Matches how the foot moves, not how it sits
- Works in 3D + time — angle, rotation, sequence
- Active through every gait phase, heel to toe
- Restores proprioceptive signal flat ground erased
Same shoes. Same floors.
Different signal to your body.
The solution
The geometry, engineered into an insole.
Same shoes. Same floors. Different signal.
42° / 16° Subtalar Axis · Landing Gear
T-100
Landing Gear · T-100
- Restores the 3D rotational pathway flat ground removed
- 90% of subjects landed in functional alignment — regardless of starting point
- Works in any shoe — sneakers, boots, dress shoes
- 98% of customers keep them past 90 days
18¢ a day · lasts up to a year
Order Here →Free ground shipping · 90-day money-back guarantee · less than 2% return rate
42° / 16° Subtalar Axis
Landing Gear · T-100
T-100
★★★★★
4.8 · 99,000+ reviews · same geometry
- ✓Restores the 3D rotational pathway flat ground removed
- ✓90% of subjects landed in functional alignment
- ✓Works in any shoe — sneakers, boots, dress shoes
- ✓98% of customers keep them past 90 days
$64.95
18¢ a day · lasts up to a year
Order Here →Free ground shipping · 90-day money-back guarantee · less than 2% return rate
Not sure? Answer 3 questions and we'll confirm →
Lab-Tested
31 subjects · 2019
98% keep them
95% recommend
Not ready yet?
Find out exactly what
the ground has been
doing to your body.
Keep scrolling ↓
The real culprit
Your body has been sending invoices
you've been ignoring for years.
Every step on flat ground. Every shift. Every day. The ground isn't neutral — it's billing you.
"Flat ground doesn't hurt your foot directly. It removes the terrain variability your subtalar joint was built to navigate. The pain comes from your body trying to compensate for motion it was never designed to lock out."
Issued by
MODERN FLAT GROUND
Concrete · Tile · Hardwood · Safety Boots
INVOICE #8547291
Billed to: YOUR BODY
Due: EVERY STEP
| Description | Charged As |
|---|---|
| Subtalar joint locked out of triplanar motion Billions of steps on zero-degree surface · lifetime accumulation | Heel pain |
| Proprioceptive feedback loop silenced Mechanoreceptors disengaged · stabilizer muscles switched off | Knee pain |
| Compensatory tension in fascia and calf Plantar fascia, peroneals, tibialis posterior over-recruited | Back pain |
| Elastic energy return collapsed No spring cycle · dead-weight exhaustion by end of shift | Fatigue |
The evolutionary gap
Your foot was shaped
over 2 million years.
Flat floors arrived 200 years ago.
Years evolving on varied terrain
Rocks, roots, soil, grass, sand — your subtalar joint learned to process 3D signals continuously.
Years on flat surfaces
Concrete, tile, industrial floors — all delivering the same zero-degree signal. Or rather, its absence.
Evolution can't catch industrialization. Your foot still expects terrain variation — and it functions best when it gets that geometry back.
The mechanism
A blocked creek doesn't
just stop flowing.
It floods everything upstream.
And padding the dam doesn't fix the flood.
What flat ground does
The Dam
When the subtalar joint can't cycle through its natural triplanar range, it locks. Force travels straight up the kinetic chain. Your knee absorbs what your heel should have distributed. Your fascia tightens to stabilize what your joint can't.
subtalar joint locked →
force redirected up →
knee, hip, spine absorb everything
What most insoles do
The Ghost in the Room
You've probably already tried insoles. Cushioning. Arch support. Maybe orthotics. They made the dam softer. They didn't open the creek. The force still had nowhere to go — it just arrived more quietly. The invoice kept growing.
subtalar joint still locked →
cushioned impact travels up →
knee, hip, spine still absorb everything
What Protalus does
The Creek
Restore the 3D pathway and the joint cycles as designed. Force is absorbed, distributed, and converted to elastic energy — the same spring mechanism your body has used for two million years.
subtalar joint guides triplanar motion →
force distributed and absorbed →
elastic return at toe-off
Independent Lab Study · BioMechanica LLC · Portland, OR · 2019
From 1 in 10…
to 19 in 31.
Same 31 subjects. Same measurement. Four conditions. How many bodies moved into a consistent mechanical range?
Standard foam insole · EVA
of 31 bodies · 10%
The floor every other insole starts from.
Leading aftermarket insole
of 31 bodies · 19%
Better shape. Same flat geometry. 25 bodies still outside.
T-100 · Protalus geometry
of 31 bodies · 61%
Wide variation in. Consistent range out. Whatever your starting point.
Remaining 12 bodies
within 1.5° of range
Only 3 remained outside — all with the highest starting deviation.
The geometry doesn't push every body to the same fixed position.
It compresses variability — so force moves through the system the same way, step after step.
"The proof is not in how it feels — it is in what the motion capture measured."— Dr. Martyn R. Shorten, Ph.D., Former Director, Nike Sport Research Laboratory · BioMechanica LLC · 2019
Who Protalus is for
Your job puts you
on the hardest floors.
Your body remembers every shift.
Nurses & Healthcare
Tile and linoleum. 12-hour shifts. No terrain variation, ever.
Warehouse & Logistics
Concrete all day. Steel-toed boots that lock the foot entirely.
Teachers & Educators
Classroom floors. Standing, walking, walking, standing again. All day.
Trades & Construction
Concrete, steel, compacted dirt. Every surface delivers the same flat signal through a boot that was never designed to fix it.
Real customers, real results
Over 2 million people.
4.8 out of 5 — 99,000+ reviews, all on the same geometry. 95% of reviewers would recommend to a friend.
"I've had plantar fasciitis for 3 years. Tried everything — orthotics, stretching, custom insoles from my podiatrist. Two weeks with Protalus and I'm walking without pain for the first time. These are not an insole. They are something completely different."
Maria R.
Verified Buyer · Nurse · 3 years plantar fasciitis
"I'm a mail carrier — on my feet 8+ hours a day on concrete. These are the only insoles that made a real, noticeable difference. My knees don't ache at the end of shift anymore. My wife noticed before I did."
Daniel J.
Verified Buyer · USPS Carrier
"My chiropractor recommended Protalus. Said my adjustments weren't holding because the flat floors were undoing everything between sessions. He was right. Best $64 I've ever spent."
Sarah K.
Verified Buyer · Teacher
Let your body decide.
When we have a pebble in our shoe or boot, our body lets us instinctively know. And we all do the same thing to fix it.
You don't need to understand why.
You just trust what your body tells you.
That's how this works.
Put them in your shoes.
Take a step.
Your body will tell you.
Days
98% of people who try them keep them. If your body says no at any point within 90 days — you get your money back. No matter how much you've worn them. No questions.
Let Your Body Decide — Try Them for 90 DaysFree shipping · Full refund if your body says no · 109 patents worldwide