Brand new Allbirds Tree Breezers knot ballet flats in Hazy Mauve (lavender) size 9 1/2 . New, never worn (Allbirds doesn’t tag their shoes so you won’t see a tag attached). Renewable Materials Machine Washable Minimizes Odor Flexibility Conforms To Your Movements Crafted with silky-smooth eucalyptus tree fiber and a fitted collar, our machine washable ballet flat never misses a beat.