If there were such amazing products that made true earthing easy, we would likely sell them on this site. However, the idea is more complicated to properly manifest than it seems. The body voltage meters used to promote these products do not tell the whole story of the other energies that at the person is being exposed to, some of them are exaggerated by the use of earthing technologies in normal pollution levels of most homes and work environments.
Earthing is amazing! There is no older healing nor anything more certain than the Earth's energy as healer. We are rediculously far removed from the balancing influences of the natural Earth and cosmic electromagnetic energies. Our urban and indoor environments now contain millions to billions of times the natural radiation levels and the microwave radiation and other forms of man made electrical pollution have a much more detrimental effect on biological systems than natural radiation does.
As for earthing products, If the grounding surfaces products your skin comes in contact with are made of non- toxic materials and are grounded correctly AND if they are used in a very clean environment, they can bring some of the outside in.
Unfortunately, the products are only certainly safe if you are positive you have no radio frequencies or electric fields or dirty electricity. Such clean environments are very rare unless specifically wired by a specialist in healthy wiring, free from indoor pollution sources and shielded from outside man made pollution.
Wires and conductive materials can aggravate problems and risks from various forms of electro-pollution (harmonics, microwave radiation, radio frequencies, electric fields, magnetic fields), by acting as an antenna.
Great idea- but only in a clean environment- best to clean up the environment first. If you feel comfortable walking on grass and on the beach or in the lake/stream/ocean, this is ideal. Swimming in nature is the very, very best, especially in the ocean. Grounding shoes are slowly starting to appear.
So far, most shoes marketed as such are just models designed to reduce static in the technology industry. I've yet to see a good shoe designed for the health benefits - i.e. a strong, protective surface that is non toxic yet has the benefits of going barefoot (to the foot muscles and meridians and the body electric.)
A not so complicated foot 'technology' for omnivores would be an all natural leather moccasin sprayed with water before going for a walk. It would need to be tanned without chemicals and heavy metals or you would be absorbing some nasty things into your bare feet. If the right shoes appeared, I would only wear them in natural areas where ground current and pavement and floor wiring wouldn't expose you to the unhealthy energetics.
During the winter, you could walk in the woods holding and a damp wooden stick in your wool mittened hands. These would be reasonably conductive. Touching a tree as often as possible will provide momentary benefits.
As you can tell, this is a subject I'm very interested in. In my other world, I volunteer with a sustainable housing organization. We are seeking funding to create prototype healthy building materials and homes that are designed to connect inhabitants with the earth and to provide electrical service within the home that is non-polluting. They will also include shielding from microwave radiation from outside pollution sources (i.e. cell towers/smart meters.)
The homes will also be designed for natural, healthy air quality and innate resistance to mold as well This project will hopefully unfold over the next few years as we reach out to philanthropists passionate about the cause and the social enterprise business model.
We have a great network of technical, progressive talent and one day hope to see the home converted into something that is as healthy as the great outdoors, only mores because it provides a steady, moderate climate and physical shelter.
I hope the above information helps.