The New Balance 520v7 Running Shoes have been crafted with a foam EVA midsole which is assisted by the comfortable insole to deliver incredible comfort with every step, allowing you to run further and longer than before. The shoes then also have a non-marking rubber outsole which maximises traction, while the engineered mesh upper helps boost breath-ability and the laced-up fastening provides a secure fit throughout the day. 4E WIDTH. Outsole: Non-marking rubber. Upper: Mesh. Midsole: EVA foam. Lace up. Imported.