Product detailed description Materials upper part polyester, mesh lining and insole polyester rubber sole Velcro strap Size chart In the table we always indicate the inside size of the shoe. We prepare the table based on our own measurements with the Plus12 (internal length) and Clevermess (internal width) tools. The optimal oversize for spring shoes is 1-1.3 cm. Recommendations for foot measurement and choosing the right size: How to choose shoes Made in the Czech Republic, the materials meet European standards and are harmless. sneakers Jonap B7V blue slim