The Volley Organic-Traced Leather Sneakers by VEJA Details Upper: Suede Panels: Suede and Organic Traced leather (O.T.) Insole: Amazonian rubber (11%), E.V.A. bio-sourced (45%, including 36% sugar cane), recycled E.V.A. (13%), organic cotton (5%) and others (26%) Outsole: Amazonian rubber (40%), mineral silica (23%), recycled rubber (10%), synthetic rubber (11%)>