These stylish beach sandals are super easy to use. Just slip them on your feet and you're ready to go for a casual day out. When choosing a size, measure your foot length from heel to toe carefully and match it with our size chart. That way, you'll get a perfect fit. As for maintenance, since they're waterproof, you can rinse them under water after a day at the beach to remove sand and dirt. Let them dry naturally in a well - ventilated area. Avoid exposing them to direct sunlight for a long time as it might damage the polycarbonate upper. With proper care, these sandals will serve you well for many casual occasions.