Product Information Design: - FSC-certified TENCEL™ Lyocell (eucalyptus tree fiber) upper - Bio-based nylon eyelets - Shoe laces made from recycled plastic bottles - ZQ merino wool heel lining - Angular heel shape softens impact In-Shoe Comfort: - Seamless one-piece upper provides maximum comfort - Lightly padded heel and collar locks ankle in place - Castor bean oil-based insole foam - SweetFoam® midsole made with sugarcane based green EVA offers flexibility and cushioning for a smoother ride Durability & Traction: - FSC-certified natural rubber outsole -Care Guide: Pull out insoles and laces, slip shoes into a delicates bag, and toss into washing machine - gentle cycle with cold water with your favorite mild detergent. Shake off any excess water and air dry. Brand : Allbirds “❤️Brand New❤️ – Shoes come without the original box. They may have been tried on in-store and could show slight signs on the soles. Please review all photos carefully for exact condition.”