Are you a music fan, or do you know someone that loves to compose? These glasses can help you to show off your love of music or creating music. These are treble clef-shaped glasses and are great for music parties or recitals. In music, When the G clef is placed on the second line of the staff, it is called the “treble clef”, and it is the most common clef used today. Measures 123mm tall, 146mm long, and 128mm wide.