Vivaia Margot Mary Jane Square Toe Ruby Red Shoes. Size 40 EU is US size 9. Adjustable instep strap for a comfy, customizable fit. These pair perfectly with casual or formal wear, making them a versatile option for any occasion. Knit upper made from plastic bottles. Lightweight, anti-microbial, and breathable. Near new condition, amazing find. Buy now or send an offer. Super fast shipping. The insole contains natural Artemisia Argyi herbal. People with allergies, please consult a medical professional before wearing.