Sustainably produced Tencel® lyocell brings signature comfort to a sneaker set on a lightweight, springy sole made with sugarcane-based foam. Lace-up style Removable insole Tencel lyocell textile upper/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