The sneakers are made with natural fibers like alpaca and merino wool, sustainable/recycled/recyclable and high-quality materials like EVA, Recycled Polyamide/ Polyester, Recycled Cotton, Thermoplastic Polyurethane, and Lenzing Viscose. These materials reduce environmental impact by minimizing the need for virgin raw materials and lowering associated carbon emissions. WIRA shoes carbon footprint is among the lowest in the global market, between 2.0 and 4,5 Kg CO2eq/pair.