We recommend sizing up, as they're a narrower fit. The Mary Jane ballerina pumps are perfect for all occasions. This chic ballet flat compliments any outfit effortlessly. Ideal for during the day or the end of the night! Product Details Highlights Super comfortable 100% cotton velvet Lining: 100% organic cotton with anti-bacterial treatment Rubber sole produced from recycled bicycle tyres Fit and Fabric Measurements Customers with a particularly high arch are recommended to size up. Size 37 - 41 Washing Instructions Dust off with a dry cloth Sustainability WHY CHOOSE 100% Organic Cotton? Organic cotton is cultivated without the use of harmful chemicals, helping to ensure that the soil, air, and water remain free from pollutants that can cause harm. By choosing organic cotton, you're supporting water conservation, cleaner air, healthier soil, and improved livelihoods for farmers. Hand-picked to preserve its natural form, organic cotton feels softer on the skin and has a more refined appearance (always a plus). Additionally, it is chemical-free and hypoallergenic, making it a great choice for sensitive skin.