Make sure to maintain your sandals as dry and dirt-free as possible.
Use a gentle brush to clean them. Brush the interior and exterior of the sandal, as well as the buckles and straps.
Clean the sandal with a gentle cloth and a few drops of leather conditioner. To remove the conditioner, gently rub it off with a piece of soft cloth
If at all possible, clean your Sandals with Saddle soap, which is specifically designed for leather cleaning.