They are made of a very hard plastic not flexible at all so my sons head hurts behind earl when he wears it they are big glasses in frong but very tight on your head. Also the fit is very bad because when you put it like glasses should be up on your nose then the bottom red outline of the glasses is on your eyes so the glasses lye too high and go more toward your forehead so you have to lower them to the tip pf your nose and then they fit better but its uncomfortable and weirl because they are away from your face. So my son doesnt want to wear it but he just likes to have them and he didn't wanna return them he is 4 and he just loves spiderman so i hope he can wear them maybe for halloween for a short period of time cause they look cook and thats why i gave them 2 stars instead of one.