New Balance 520v8 Women's Running Shoes The versatile 520v8 features a soft, cushioned EVA midsole for underfoot cushioning with an engineered mesh upper for outstanding breathability, keeping you comfortable and focused on all activities. Engineered Mesh Upper Providing you with an exceptional level of airflow and breathability, and keeping feet extremely comfortable, the 520v8 Running Shoes have an engineered mesh upper construction. The constant supply of airflow ensures your feet remain cool and feel fresh, for the perfect in-shoe experience. The synthetic and textile upper materials that work alongside this, supply your feet with a great layer of protection, allowing feet to thrive under pressure. The no-sew construction prevents irritation and chafing from occurring, meaning your feet will remain comfortable. The shoes also have an adjustable lace closure, to ensure a customised fit, keeping your feet locked in and secure during intense strides. EVA Midsole EVA exists i.