AllBirds Mens 8 Tree Tree Runner Marine Blue Comfort Light Sneakers NIB Easy to clean Breathable, silky-smooth Tree Runner is a lightweight everyday sneaker, made with responsibly sourced eucalyptus tree fiber. The Tree Runner has a carbon footprint of 4.52 kg CO2e.Learn more about carbon footprint labeling and our commitments to reduce our impact.Best For: Walking, warmer weather, everyday wearThermoregulating: Lightweight, breathable eucalyptus fiber provides next-level comfortSustainable Materials:FSC-certified TENCEL™ Lyocell (eucalyptus tree fiber) upperSweetFoam® midsole made with sugarcane-based green EVABio-based TPU eyeletsShoe laces made from recycled plastic bottlesCastor bean oil-based insole foamZQ merino wool heel liningSome models may include a wool-lined insole instead of the TENCEL™-lined insole featured in the imagePlease review all photos, for they are part of the descriptionThank you for visiting!!