These orthotics were designed by Doctors of Physical Therapy Ted Anderson and Teddy Zabel in Maui to meet the specifications of our patients' most common issues. Through a two year design process they were honed to the point that over 200 patients who tried them did not have a single complaint, and all had alleviated symptoms in their feet, ankles, and knees. These orthotics were made for premium semi-customizable support. We recommend you take these to a physical therapist to have them customized. However, out of the box 196 of those patients did not need customization. These orthotics can address symptoms associated with: Plantar Fasciitis, Bunions, Metatarsalgia, Hallux Rigidus, Balance issues, ankle/knee/hip pain and arthritis, and more. Disclaimer: This product is not intended to diagnose and treat specific conditions. Consult with your doctor or physical therapist regarding concerns if this product is right for you.