description: The bovine ChromeFree leather is smooth and light. Coming from farms located in the south of Brazil (Rio Grande do Sul), it undergoes an innovative tanning process where no chrome, heavy metals or dangerous acids are involved. By simplifying the tanning process, the use of chemicals and energy is limited, the use of water is reduced by about 40% and the use of salt by 80%. After tanning, the water is recyclable. fabric: Upper: ChromeFree leather Panels: ChromeFree leather and Suede Logo V: Suede Insole: Amazonian rubber (11%), sugar cane (42%), recycled E.V.A* (11%), organic cotton (12%) and others (14%) Outsole: Amazonian rubber (40%), silica mineral (23%), recycled rubber (10%), synthetic rubber (11%) and others (16%) Welt: Synthetic rubber (40%), silica mineral (22%), and others (38%) Lining: Tech (100% recycled polyester) Straps: ChromeFree Leather *Ethylene vinyl acetate The use of washing machine is not recommended as it may alter the properties of the different materials. Maintain the smooth leather of your shoes with a wet cloth and periodically with a specific product in spray or cream. Suede inserts can be maintained by dry brushing. Before wearing them for the first time, we advise you to waterproof your shoes with a spray adapted to the material and to repeat this operation periodically . Made in Brazil measurements: Size 36: 22.6 cm Size 37: 23.3 cm Size 38: 24 cm Size 39: 24.6 cm Size 40: 25.3 cm Size 41: 26 cm Recife Chromefree Leather Sneakers - White/Steel