SOLUS is an eco-friendly alternative to the fast-fashion production of traditional sneakers. Solus allows you to change all parts of the shoe ensuring a product suitable for every type of terrain and need, resulting in optimal both for biomechanical-human and environmental health. Interchangeability is simple, fast and intuitive, resulting in a good example of anthropocentric design (HCD). A solution attentive to waste which, through the rationalization of wear and the lengthening of the life of the product, safeguards human and environmental health.