Product Details Step towards a better future with these Tree Runner sneakers by Allbirds. Breathable and lightweight, they're perfect for warmer weather thanks to the responsibly sourced eucalyptus tree fiber (FSC-certified TENCEL™ Lyocell) upper that feels silky smooth and cool on your skin. With a carbon footprint of 4.11kg CO2e, they're set on a SweetFoam® midsole made with sugarcane-based green EVA and a castor bean oil-based insole foam. SKU: AB00FV-HAINBL Navy Fabric Lining: Fabric lining Closure: Lace-up fastening Toe style: Round-toe Made in: Vietnam Fits true to size, take your normal size