Yeah, you are right. There are many people who are willing to wear the sunglasses on their head, especially the Russian people. Of course, there must some reasons why those people do that. As far as I know, there are three kinds of reasons. First of all, some people do not want to put away their sunglasses, namely, just put on their head, so that they can easily full down the sunglasses when they are exposed under the sun. You know it is much convenient for you to finish the act. In addition, some people put the sunglasses on the head just making the sunglasses serve as a hair bond to prevent the hair from covering the yes. In fact, some of them put the sunglasses on the head for nothing, namely, they just want to make them look more fashion. Hope my personal advice can help you.