Vivobarefoot has launched a new “swim run” shoe, created in collaboration with Michelin. The Vivobarefoot Tempest is the first style in Vivobarefoot’s Extreme Survival collection. The shoe has been designed to enable an easy transition from trails to water. The pattern of the outsole, developed in collaboration with Michelin, mimics the growth patterns of marine corals, creating a light cage that is meant to provide breathability and flexibility while allowing water drainage on land or water. The heel of the shoe uses high-performance foam made with algae biomass, a sustainable alternative to the synthetic and petrochemical EVA foam.