This men's Bradstreet Ultra chukka features our GreenStride™ comfort sole, which is made with 75% natural, renewable materials and an upper in premium Better Leather sourced from a tannery rated silver for its environmental processes. This hiker pairs the sleek look of a shoe with the cushiony soft footbed and foam-like sole construction of a trainer. GreenStride™ comfort sole made from 75% renewable materials, including sugar cane and responsibly sourced natural rubber Upper in premium nubuck Better Leather from a sustainable tannery rated silver by the Leather Working Group for its water, energy, and waste management practices Durable ReBOTL™ fabric lining containing at least 50% recycled plastic Lace-up style Lightweight and breathable OrthoLite® footbed for comfort EVA-blend foam midsole for cushioning Rubber outsole for grip