The Tree Piper is a classic low-top silhouette that's been reimagined for everyday casual wear while walking in warmer weather. It's made with lightweight, breathable, and comfortable natural materials, and is all about balancing simplicity and exaggeration for versatile styling. Features & Design: lightweight and breezy, flexibly conforms to your movements, help your feet stay cool, silky-smooth material, so soft you can wear sockless, minimizes odor, machine washable, low carbon footprint, padded insole, tree upper, bio-based eyelets, recycled laces, lightweight sole, Allbirds Men's Tree Pipers, Moonrise, Size 11