Allbirds Wool Runners Natural Gray Colorway womens shoes. Size 10. superfine NZ merino wool. Shop the one that started it all: Our Merino Wool Runners. Our superfine ZQ Merino wool material is incredibly soft and cozy, naturally thermoregulating, and ready for anything. 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. Learn more about our commitment to regenerative agriculture. Best For: Walking, cooler weather, everyday wear Super Soft Material: Warm and cozy premium ZQ Merino wool provides next-level comfort Versatile Design: Wear-with-everything classic style, great for travel - Warm and cozy ZQ Merino wool provides next-level comfort Cushioned midsole gives wear-all-day support Machine-washable materials keep shoes looking like new