Design: ZQ certified Merino wool upper meets the highest standards of animal welfare, environmental care, and social sustainability Water-repellant Puddle Guard® technology keeps feet dry Bio-based shield treated with fluorine-free water repellant coating Bio-based nylon eyelets Shoelaces made from recycled plastic bottles Reflective details increase visibility for safer runs In-Shoe Comfort: Castor bean oil-based insole foam for added comfort SweetFoam® midsole made with sugarcane-based green EVA Flexible, cushioned midsole offers a smoother ride Durability & Traction: FSC-certified natural rubber outsole All-condition traction grips slippery surfaces Additional Details: Best For: Running, traction, water-repellent protection Weight: 10.3 oz. (292g) Heel Drop: 7mm (Forefoot: 15.5mm, Heel: 22.5mm) Carbon Footprint: 12.9 kg CO2e 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.