When I thought my foot issues were nerve-related, I was using the Naboso info and some products, but once the issue was id'd as bunions and arthritis (only nerves when the spinal stenosis aggravates the nerves--but not nerve damage), I realized the nerve-stimulating texture on the Naboso ball an insoles was making the arthritis ache, I only use those covered in a sock and very rarely., But, the Naboso philosophy about the zero drop, which is explained in the Naboso book about the dr's barefoot philosophy is making more and more sense to me. You can just search Naboso.com