Made from corn waste and bamboo, all Flamingos' Life sneakers are 100% vegan, since the foundation in 2015. The upper material is made from 50% corn and 50% PU (25% Recycled). The inner lining from 50% bamboo and 50% PU. Sole made with 25% natural rubber 25% conglomerate like natural silica and 50% synthetic rubber. Organic Cotton laces.