Brand New, Never Worn. Allbirds Tree Piper Sneakers in men’s size 10 CLASSICS: Kaikoura White (White Sole) All day comfort. Everyday style. This classic low top made with breezy eucalyptus fiber is the sneaker your outfits have been waiting for. Best For: Walking, warmer weather, everyday wear Thermoregulating Material: Lightweight, breathable eucalyptus fiber provides next-level comfort Versatile Design: Wear-with-everything classic style, great for travel Where It’s Made: Vietnam. Learn more about our operations.