O.T (Organic Traced) leather comes from 100% organic certified farms in Uruguay, a country known for its culture of animal husbandry and the quality of the leather. It is the softest and finest of our leathers coming from bovines. This type of leather undergoes a mechanical beating process makes it fine and bendable. Tanned in Brazil using less dyes than our conventional bovine leather. VEJA uses conventional dyes that comply with regulations.Specifications:- Upper: O.T. Leather- Panels: Suede- Logo V: Amazonian rubber (26%)- Insole: Amazonian rubber (12%), sugar cane (42%), recycled polyester (23%) and others (12%)- Sole: Amazonian rubber (40%), silica (23%), recycled rubber (10%), synthetic rubber (11%) et others (16%)- Lining: Tech (100% recycled polyester)- Laces: Organic cotton (100%)