Using your Wolky Jasper sandals is easy. Just adjust the Velcro closures on the instep to get a perfect fit for your foot. When it comes to sizing, remember that these sandals run a bit small, so it's best to choose one size larger as a general rule. As for maintenance, use a soft, damp cloth to clean the leather regularly. Avoid exposing the sandals to extreme heat or direct sunlight for long periods as this can damage the leather. Also, if the sandals get wet, let them dry naturally at room temperature. When not in use, store them in a cool, dry place to keep them in good condition.