Earthing shoes (also called grounding shoes) are footwear designed to create an electrical connection between your body and the ground. Standard shoes use synthetic rubber or plastic soles that block this connection. Earthing shoes replace or modify those materials with conductive ones, allowing the earth’s natural electrical charge to reach your skin.
How Earthing Shoes Work
Your body carries a mild electrical charge, and so does the earth’s surface. When you walk barefoot on grass or soil, electrons from the ground flow into your body. Proponents of earthing believe this electron transfer reduces inflammation and improves various aspects of health. Modern shoes, with their thick synthetic soles, act as insulators and block that flow entirely.
Earthing shoes restore the pathway. They create a conductive channel from the bottom of the sole up to the skin of your foot, so you get a barefoot-like electrical connection while still wearing shoes. The design typically involves three components working together: a conductive outsole that touches the ground, a conductive insole or sock liner that touches your foot, and a conductive strip or tape running through the shoe to connect the two.
Materials Used in Conductive Soles
Different brands use different approaches to make their soles conductive, and the material choice affects durability, comfort, and how well the shoe actually conducts.
- Carbon-infused rubber is the most common approach. Conductive carbon particles are dispersed throughout a standard rubber sole, creating a pathway for electrical charge across the entire bottom surface. Because the carbon is distributed throughout the material rather than concentrated in one spot, the sole stays conductive even as it wears down. Carbon rubber is flexible, durable, and resistant to corrosion.
- Copper plugs or rivets are embedded directly into the sole of some designs. Copper is highly conductive, but it has a practical downside: it transfers heat very efficiently, which means it pulls warmth away from your foot in cold weather. A copper plug also creates a single point of contact rather than whole-sole conductivity.
- Silver thread is sometimes woven into the insole lining or sock liner. Silver is actually the most electrically conductive metal known, even more so than copper, and it works well in wearable textiles because it stays flexible. Silver-threaded fabric on the inside of the shoe ensures good contact with your skin.
- Natural leather offers a partial grounding effect on its own. Leather absorbs moisture from the environment, and those trace amounts of water and natural salts allow electrons to move through the material. The catch is that leather’s conductivity drops significantly when it dries out, so it works better in humid conditions than in arid ones.
Inside the shoe, the insole often uses a carbonized EVA foam topped with a woven fabric that contains metallic thread. A conductive tape, sometimes made from carbon-bonded nylon fiber, runs along the interior to bridge the gap between the outsole and the insole, completing the circuit from ground to foot.
Which Surfaces Actually Conduct
Earthing shoes only work when the ground beneath you can carry an electrical charge. Not every surface you walk on qualifies.
Grass, soil, sand, and gravel all conduct well, especially when damp. Concrete is also conductive, as long as it sits directly on the earth (a sidewalk works, a raised concrete parking deck may not). Wet concrete conducts better than dry. Asphalt, however, is non-conductive, so walking on a paved road with earthing shoes won’t create a grounding effect. Wood, vinyl, and carpet also block conductivity. If you spend most of your time walking on asphalt or indoor surfaces, earthing shoes won’t do much during those portions of your day.
What the Health Research Shows
The central claim behind earthing is that direct electrical contact with the ground reduces inflammation, improves sleep, and lowers stress hormones. The evidence for these claims is limited and mixed.
One frequently cited study found that people who practiced grounding had lower nighttime cortisol levels (cortisol being the body’s primary stress hormone) and that their cortisol patterns aligned more closely with a healthy 24-hour sleep-wake cycle. That’s a meaningful finding in theory, since chronically elevated cortisol contributes to poor sleep, weight gain, and weakened immunity. But the study was small, and the results haven’t been replicated at scale.
When researchers tested grounding shoes specifically on athletic performance, the results were unremarkable. A study of ten elite runners compared grounding shoes to standard running shoes and found no differences in running economy, blood lactate levels, heart rate, or perceived exertion. Oxygen consumption was virtually identical between the two conditions (50.9 vs. 51.1 mL per kilogram per minute). Heart rates were also nearly the same (151 vs. 150 beats per minute). The grounding shoes didn’t hurt performance, but they didn’t measurably improve it either.
Sleep improvement is another common claim. While some grounding users report falling asleep faster and sleeping more deeply, clinical trials have not confirmed these effects. The gap between personal reports and controlled studies is one of the biggest unresolved questions in grounding research.
Safety Considerations
A reasonable concern with conductive footwear is whether it increases your risk during a lightning storm. In practice, this isn’t a meaningful worry. Standard rubber-soled shoes provide no protection from lightning strikes in the first place. Lightning carries enough voltage to travel through miles of air, so a thin layer of rubber, conductive or not, makes no difference. The Lightning Protection Institute has explicitly called the idea that rubber soles protect from lightning a “fallacy.” Your safety during storms depends on getting indoors or into a vehicle, not on what’s on your feet.
One practical consideration: if you have a pacemaker, implanted defibrillator, or other electronic medical device, changing your body’s electrical environment is something worth discussing with your cardiologist before trying grounding products.
Earthing Shoes vs. Going Barefoot
Walking barefoot on natural ground is the simplest form of earthing, and it’s free. Earthing shoes exist for people who want foot protection, arch support, or the ability to ground in settings where bare feet aren’t practical, like city sidewalks or rocky trails. The tradeoff is that even the best conductive sole adds some resistance compared to direct skin-to-earth contact. Carbon-infused rubber conducts well enough to allow electron flow, but it’s not as efficient as bare skin on wet grass.
If you’re curious about grounding and want to test the concept before spending money on specialized footwear, walking barefoot on damp grass or soil for 20 to 30 minutes is the most direct way to try it. If you notice benefits and want to extend that experience throughout your day, earthing shoes are the main commercial option for doing so.