The Wool Piper is a classic low-top silhouette that's been reimagined for everyday casual wear while walking in cooler weather. It's made with soft, cozy, and comfortable natural materials, and is all about balancing simplicity and exaggeration for versatile styling. Features & Design: soft and cozy, flexibly conforms to your movements, cool in the heat and warm in the cold, wicks moisture, so soft you can wear sockless, minimizes odor, machine washable, low carbon footprint, lightweight sole, wool upper, recycled laces, padded insole, Allbirds Women's Wool Pipers, Natural White, Size 9