VIVAIA Square Toe Mary Jane Margot Black Flats Shoes Women's Size 40 US 9 EUC Women’s size US 9. Black. Excellent condition Machine washable The beloved Margot Mary-Jane has been updated with an adjustable instep strap for a comfy, customizable fit. Its classic design pairs perfectly with casual or formal wear, making it a versatile option for any occasion. Dress it up for a night out or wear it to the office - the Mary-Jane's fashion and function blend seamlessly. Square-toe Flat 1cm/0.34'' heel Adjustable Strap Knit upper made from plastic bottles Natural Artemisia Argyi herbal insole Rubber outsole