They are insoles for sports shoes. Suitable for sports, hiking or everyday use. Designed with fiber-tech technology, they contain a support that contains the arch of the foot and favors a good mechanical functioning when walking. With shock zones in the metatarsal and heel to absorb and distribute the impacts of sport. Made with breathable open-bristle materials that favour air flow and help eliminate excess perspiration. Suitable for all skin types. Size M (38, 39, 40).