- Materials: Upper: O.T. leather (Organic Traced leather)Panels: Suede and O.T. leather (Organic Traced leather)Logo V: Screen printingInsole: Bio-based E.V.A. - sugar cane (55%), organic cotton (19%) (lining)Outsole: Amazonian rubber (31%), mineral silica (31%), synthetic rubber (19%)Lining: Recycled polyester (100%)Straps: Suede