NOENE Red Sole NO2+ As seen on shark tank this is the most comfortable insoles for flat feet, for plantar fasciitis, for work boots and boots with heels, and much more. These are the best insoles for nurses and doctors and anyone standing on their feet all day long. These high-tech replacement insoles combine different materials and fabrics to provide maximum comfort and protection. The insoles are great for everyday use and they provide comfort and protection for your feet and joints. Washable and reusable, they are specifically designed for all-day use. Perfect anyone who works or stands on their feet all day. Great for Seniors who want to maintain an active lifestyle.