Our Wool Runner Mizzles have a carbon footprint of 9.1 kg CO2e. Learn more about carbon footprint labelling and our commitments to reduce our impact.

Sustainable Materials:

• ZQ certified Merino wool upper that meets the highest standards of animal welfare, environmental care, and social sustainability

• Bio-based shield treated with fluorine-free water repellent coating

• SweetFoam® midsole made with sugarcane-based green EVA

• FSC-certified natural rubber outsole

• Shoe laces made from recycled plastic bottles

• Castor bean oil-based insole foam

• ZQ merino wool heel lining

To preserve the Mizzle’s fluorine-free water-repellent treatment, we recommend spot cleaning with warm water and gentle soap whenever possible. If they need a deep clean, follow the below steps to machine wash, but only on a limited basis.

• Remove the laces and insoles.

• Place shoes in a delicates bag (pro tip: a pillowcase works too).

• Choose a gentle cycle with cold water & mild detergent.

• Shake out any excess water & set aside to air dry.

• Shoes will regain their original shape with one or two wears.

Want the full refresh experience? Swap in some new laces and insoles.

Free shipping on orders over £45, and returns accepted within 30 days. Lightly worn shoes get donated to Soles4Souls. Returns Portal.*

Final Sale items cannot be returned or exchanged unless defective or fail to perform as described. Final Sale items include: gift cards, insoles, sock bundles, TrinoXO Face Masks, and items tagged final sale on our website and in Allbirds retail stores.