Allbirds Women's Tree Breezers washable ballet flats in US women’s size 9. These are in extremely gently worn condition and are clean and ready for you to enjoy! Renewable Materials Machine Washable Minimizes Odor Flexibility Conforms To Your Movements DESCRIPTION Crafted with silky-smooth eucalyptus tree fiber and a fitted collar, our machine washable ballet flat never misses a beat. Made in South Korea or Vietnam.