Product details with allbirds' signature wear-all-day comfort, the wool runner 2 sneakers are lightweight and bouncy, designed to make any outing feel effortless. Made responsibly, this sustainability-focused pair features an fsc-certified tencel™ lyocell (eucalyptus tree fiber) upper, a sweetfoam® midsole made with sugarcane-based green eva, and a castor bean oil-based insole foam. Sku: a10805-denabl navy wool lining: fabric lining closure: lace-up fastening toe style: round-toe made in: vietnam fits true to size, take your normal size