Feel good in this sustainably minded walking sneaker featuring a breathable Tencel® lyocell upper made from eucalyptus-tree fibers. The laces are made from recycled plastic bottles, while sugarcane-based EVA foam cushions every step. Removable, cushioned insole Merino wool heel lining Tencel lyocell textile upper/merino wool textile lining/synthetic sole Tencel lyocell is a sustainably produced fiber made with closed-loop processing Imported The SweetFoam™ midsole is made with sugarcane-based EVA, a carbon-negative alternative to EVA foam derived from petroleum. The sugarcane is sourced from southern Brazil, where it relies on rainwater, not irrigation. It's sourced according to rigorous standards jointly developed by Proforest and Braskem, and the farms are audited by a third party. AllBirds is allowing its Carbon Footprint tools to be open source rather than proprietary, so it can make a difference in the shoe industry as a whole This brand has B Corp certification, representing business practices with emphasis on social and environmental performance, accountability and transparency This brand meets Nordstrom Responsible Brands criteria: brand adheres to responsible social and environmental practices