MINIMALIST RUNNING / BAREFOOT RUNNING With 200,000 nerve endings, 33 major muscles, 28 bones, 19 ligaments; the human foot is a biomechanical masterpiece. No heel, no midsole, no arch support, no gimmicks! VIVOBAREFOOT helps encourages us to move as million years of evolution intended – barefoot. The VIVOBAREFOOT difference is in the sole. They make a series of constructions specifically designed for varying elements, terrains, and activities. Many experts believe the shoes we wear not only cast the foot in a protective form, but can also weaken our foot and leg muscles, leaving them underdeveloped and more prone to injury. And while there are many occasions where traditional footwear is essential for protection, safety, and security, it is equally important to stimulate and exercise our feet in a more natural state on a regular basis. The Ultra, a lightweight barefoot amphibious running shoe. Suitable for: light trail cross training, water sports, long runs and general beachside and urban barefoot exploration.