How to use: Simply slip your feet into these shoes and adjust the stretchable elastics on the instep for a comfortable fit. You can also insert your custom orthotics into the removable, cushioned insole. Attention: The product measurements are based on size 38, so the actual size may vary. Be careful when walking on wet or slippery surfaces. Maintenance: Use a soft brush to clean the nubuck regularly. Store them in a cool, dry place when not in use to keep the leather in good condition.