Nefes Shoes has a great selection of grounding shoes that are made with natural materials, such as leather. Be aware that they do have some varieties that are not "earthing" shoes and don't have the copper rivet for conductivity. All their shoes are handmade with quality materials and have a "barefoot" style wide toe box to allow the feet to bend and flex as they're intended to. They are also much more affordable than many similar brands.
Keep in mind, the health benefits of grounding are free—just go barefoot. But these are a great tool for those that want to have more grounding time, or who are looking for shoes made with quality natural materials (leather).
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