My feet 5 reasons why

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WILD BAREFOOT · Journal
Advertorial · A customer's 30-day test · 6 min read

Wide Toe Box. Barefoot Feel.
My Feet Still Ached at 55.

Then I found out what every pair I compared was missing: copper.

Two women in their fifties on their morning walk, wearing black Wild Barefoot grounding shoes
Our morning loop, five weeks in — same route, different shoes.

My friend laughed when I told her I'd ordered barefoot shoes with copper in the sole — she's 57, we walk every morning.

Five weeks later, the evening ache I'd written off as "just being 55" had completely stopped — and I was reading about it on my phone at night, trying to understand why.

Then I found this: researchers measured the electrical charge a body builds up from walking on rubber-soled floors indoors. On average, about 1.2 volts — sitting in you all day. The moment someone makes a grounded connection, that reading drops 70 times over. Copper is what makes the connection — it's the second-most conductive metal on Earth, which is why the power grid runs on it. Right in the sole, it's a live path to ground with every step.

Here are my 5 reasons how copper soled shoes gave me my morning walks back.

Note: If you already know all about wide toe boxes and zero drop, skip straight to Reason 2. That's the part nobody told me.

Reason 1. A good barefoot shoe fixes your gait. That was never my whole problem.

Here's what my year of barefoot walking genuinely fixed: my toes spread out, my calves woke up, my balance got steadier. If your shoes did that too, keep them in the rotation — that part works.

But there's a second thing modern soles do, and no toe box can undo it: rubber is an insulator. The same property that makes electricians wear rubber-soled boots means that every step you take is sealed off from the ground beneath you. For all of human history, bare skin on soil discharged the body by default. Since rubber soles, that stopped — and researchers can actually measure what's left behind:

Measured fact: an ungrounded human body indoors carries an induced charge of roughly 1.2–1.3 volts from the electrical environment around it (Applewhite, 2005, instrumented measurement).

My barefoot shoes were correcting my mechanics. They were doing nothing about my charge.

Reason 2. The copper is the difference you can see.

Close-up of the Wild Barefoot outsole with the copper conductive stud

The whole trick, up close: a conductive copper stud in the outsole.

Flip over any barefoot shoe on your comparison list. Rubber, edge to edge. Flip over these and there it is — a bright disc of real copper, connected through to your foot.

Why copper? Because it's the second-most conductive metal on Earth — only silver beats it. There's a reason the entire power grid runs on copper wire. It is simply the best affordable material humans have for moving charge from one place to another. In this case: out of you, into the ground.

Reason 3. You don't have to believe it. You can measure it.

Multimeter reading 1.36 volts in ordinary sneakers indoors, 0.02 volts in copper-soled shoes on the sidewalk

That barefoot-on-grass feeling, measured.

This was the moment for me. In published measurements, grounding the body dropped that stored voltage roughly 70-fold — from over a volt to a few hundredths. It's the same drop you can watch on a $30 voltmeter, on camera, on an ordinary sidewalk.

But the voltage drop is just the signal. Here's what happens downstream — three things the studies kept finding:

Inflammation drops. When you're grounded, electrons flow in and act as natural antioxidants — neutralizing the free radicals that drive chronic inflammation. In a triple-blinded trial of 22 adults, the grounded group's muscle-damage marker rose 310% after hard exercise. The ungrounded group's rose 760%.

Stress settles. In a study of 12 adults grounded for 8 weeks, the body's main stress hormone — cortisol — normalized in its daily rhythm. Not suppressed. Regulated back into its natural pattern.

Blood moves more freely. In a study of 10 adults grounded for just 2 hours, red blood cells were measured at 2.70× more electrically charged on average — meaning they repelled each other instead of clumping. Large clusters fell by more than half. The blood simply flowed better.

Small studies, real journals — and you can read every one on our Science page.

See the Grounding Shoes →

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Reason 4. It grounds you on concrete and pavement — not just grass.

My first thought was: "I'll just walk barefoot in the yard." My second thought was October. Wet grass, gravel, thorns, and a Minnesota winter make actual barefoot time a five-minute novelty.

Concrete and pavement, it turns out, are conductive — they hold moisture. So the copper sole works on the sidewalk, the trail, the parking lot. And unlike the grounding mat a friend keeps by her bed, it isn't an eight-hours-a-night thing you leave at home. Every step of every outdoor errand counts.

Walking on a damp concrete sidewalk in Wild Barefoot shoes, copper stud visible in the lifted outsole
Concrete holds moisture — the sidewalk counts.
  • Works on grass, soil, sand, gravel, concrete and pavement
  • All day, everywhere — not just at home like a mat
  • No bare feet, no weather problem, no five-minute novelty

Reason 5. My first 30 days told me everything.

Days 1–4: Mostly what my old barefoot shoes felt like — toes spreading, calves working, short walks. (If you're new to barefoot shoes, start with 20 minutes a day; there's an adjustment period and the sizing note below matters.)

Week 2: The first thing I noticed wasn't my feet — it was the clock. It was 6 pm and I hadn't thought about my feet yet.

Weeks 3–4: Full errand days. The evening ache that had been my 5 o'clock alarm for three years just… didn't come.

"You're not shuffling anymore. You walk like you're going where you're going."
— My sister, week 3

The three pairs on my comparison list

Wild Barefoot Grounding Vivobarefoot Motus Strength II Tolos Soleil
Wide toe box
Zero drop
Thin, flexible sole
Earth connection Copper conductive sole Insulating rubber Insulating rubber
Price $79.95 (2 pairs, BOGO) $220 $115

The first three rows are why I trusted the category. The fourth row is why I chose this pair. The fifth row is why I didn't hesitate.

I'm clearly not the only one

★★★★★ 4.9/5 · 12,500+ pairs walking free

"First shoes in years where I think about the dog, not my feet."
— Gerald, 62, walks his dog 2× a day
"Worn every day since last November."
— Wendy B., verified buyer
"I was the biggest skeptic in my walking group. I'm now the one everyone asks about the copper."
— Donna M., verified buyer
Wild Barefoot grounding shoes by the front door

Wild Barefoot™ Grounding Shoes

Barefoot design + copper conductive sole — the only pair on your list that does both.

$79.95 $159.90  ·  Buy 1, Get 1 Free

  • Copper conductive sole · wide toe box · zero drop · featherlight
  • 5 colors · women's & men's sizes (W5.5–W14)
  • Runs true to size — between sizes? Size up.
Try Them at Home for 30 Days →

Free US shipping · easy exchanges

The 20-Minute Test: wear them outside for a 20-minute walk a day for 30 days. If your evenings don't feel different, send them back — easy exchange or full refund.

The questions I had before clicking Buy

Do they look like "barefoot shoes"?They look like modern sneakers — nobody in my walking group guessed until I showed them the sole.
I already own barefoot shoes. Is this worth it?Mine fixed my gait too. The copper is the part they can't do — that's the entire difference, and it's the one you can see and measure.
Does it work through socks?Yes — moisture in ordinary socks conducts; you don't need bare feet or special socks.
Does it only work on grass?No — soil, sand, gravel, concrete and pavement all conduct. Dry wood and asphalt-sealed surfaces don't.
Do I have to believe in grounding for it to work?No. Charge doesn't care what you believe — that's why the voltmeter demo convinced me, not a testimonial.
Is there an adjustment period?If you're new to thin soles, yes — start with 20 minutes a day. Coming from barefoot shoes, you already know the feel.
What size should I order?True to size; size up if between sizes. Wide feet are the point — the toe box is foot-shaped.
Should I get two pairs?The Buy 1 Get 1 exists because most people want one by the door and one clean — or their spouse claims the second pair (ask Doreen's husband).

Wild Barefoot · Help Center · Size & Care Guide · The Science · Shipping & Returns

Wild Barefoot products are not medical devices and are not intended to diagnose, treat, cure or prevent any disease. Information on this page is general education, not medical advice. Consult your doctor. Individual results vary. Studies referenced were conducted on grounding systems (mats, patches, sheets), not on this footwear.