We bought the glasses for our Australia holiday and are super excited. Had they grown only on very white beaches, since one with such young children actually have to use any sunglasses. But since it was partly as bright, we have placed a precaution. By elastic it fits superbly and remains on his nose. Our daughter has naturally always even think about it pulled back and then she has slipped but never fell from the nose or something. After an acclimatization she has her also like. So all in all we are very happy with the glasses and they would buy again.