Buy the one that started it all: our merino wool runners. Our super-fine ZQ merino wool is incredibly soft and comfortable, naturally thermoregulating and ready for anything. Details: Best for: Walking, cooler weather, everyday wear ZQRx regenerative wool material: The wool used for our Regen capsule is grown using regenerative farming practices that aim to help reverse climate change through practices that restore and preserve nature. Super-soft material: premium ZQ merino wool, warm and cozy, offers next-level comfort Versatile design: classic style to wear with everything, ideal for travel Where made: Vietnam. Warm, cozy ZQ merino wool offers next-level comfort Cushioned midsole offers all-day support. Machine-washable materials keep shoes looking like new Durable materials: Our Wool Runner has a carbon footprint of 8.03 kg CO2e. As a Climate Neutral certified carbon-neutral company, Allbirds balances its emissions by funding high-impact carbon projects. ZQ-certified merino wool upper that meets the highest standards of animal welfare, environmental protection and social sustainability SweetFoam® midsole in green EVA made from sugarcane Shoelaces made from recycled plastic bottles Castor oil-based foam insole Heel lining in ZQ merino wool SHOE CARE Remove laces and insoles. Place shoes in a delicates bag (pro tip: a pillowcase works too). Choose a gentle cycle with cold water and mild detergent. Shake off any excess water and leave to air-dry. Shoes will return to their original shape after one or two uses. Want the full refreshment experience? Exchange new laces and insoles.