Using these Molokai art thong sandals for your boys aged 2 - 7 is a breeze. Just slip your child's feet into the sandals and adjust the 3 - point rubber strap for a comfortable fit. When wearing them, make sure the strap isn't too tight to avoid discomfort. As for maintenance, it's easy. After a day at the beach or a walk on the sidewalk, simply rinse them with clean water to remove sand and dirt. Let them dry in a well - ventilated area. Avoid leaving them in direct sunlight for too long as it might damage the rubber. With proper use and care, these sandals will last you a long time.