Heydude has made a commitment to not only making great looking comfortable shoes, but making them sustainably. Their cork insoles are made from recycled open-cell EVA foam which allows air circulation, while the coconut oil reduces odor. All P.E.T fibers are 100% recycled, repurposed "environmental waste" from plastic bottles. The leather hides + fabric scraps are fused together, using 90% less water, leaving far less of a carbon footprint. They're also produced without any chemical fertilizer and harmful pesticides.