The Allbirds x adidas Futurecraft Footprint 'Non Dyed' running shoe is made with sustainability in mind. The unlined upper is made from 77% recycled polyester and 23% Tencel, and the cushy EVA midsole incorporates 17% plant-based content derived from sugarcane. The synthetic outsole is made with 10% recycled rubber, and the whole shoe has a carbon footprint of just 2.94 kg CO2e.