Allbirds Women's Tree Breezers Ballet Flats Breathable Knit Flats, Made From Natural Materials for All-Day WearInnovations:Lightweight, breathable, and effortlessly sleek, the Tree Breezer is your go-to flat. It has a carbon footprint of 2.7 kg CO2e. Learn more about carbon footprint labeling and our commitments to reduce our impact.Best For: Day-to-night, warmer weather, everyday wearThermoregulating Material: Lightweight, breathable eucalyptus fiber provides next-level comfortVersatile Design: Wear-with-everything classic style, great for the officeSustainable Materials:FSC-certified TENCEL™ Lyocell (eucalyptus tree fiber) upperSweetFoam® midsole made with sugarcane-based green EVACastor bean oil-based insole foamWhere It’s Made: Vietnam. Size: 7Color: Jet BlackIn Excellent Pre-Owned Condition with very slight signs of wear (Please see photos)