Injinji begins its story in 1999, when the Romay brothers wanted to redesign the structure of the sock. They felt that your foot should be able to perform freely and natural inside your shoes. And socks play an important role for this. Injinji has a patent for tetratsoks. The tetratsoks are specifically designed to enable your entire foot to perform naturally and efficiently from heel to toes. The Injinji tetratsoks prevents blisters, moisture buildup, and neuromas.