We bought the glasses for our seven-month-old son, because it is soon for a long time in the Spanish sun. The glasses looks ultra cool! Our little one is fascinated that it suddenly becomes dark, if he has to. Unfortunately, she slips him repeatedly on the back of the head and then press the tape to the ear or the glasses no longer seated. Only fixed I would not make the tape! So far, he makes the glasses only a few minutes, but we "exercise" regularly :-)