To use these sandals, simply untie the laces, slip your feet in, and adjust the laces for a comfortable fit. As for maintenance, use a damp cloth to clean the leather regularly. Avoid exposing them to extreme heat or moisture. When not in use, store them in a cool, dry place. If you decide to use your own orthotics, just remove the existing footbed and insert yours. Be careful not to force the footbed out to prevent any damage to the sandal.