These glasses have two sets of round lenses that flip up. You feel like a pop star when you wear them. The first set of lenses is clear, and the gray lenses flip up above your brow. When you pop open the dark lens, you will look and feel like a certain cartoon mouse. The purple, hand polished frames are thick and weighty and feel good on your face. Besides being fashionable, they are also functional. You can wear them indoors with the dark lenses up, and outside with them down. The lenses also provide 100 percent UV400 protection. Measures 69mm tall, 145mm long, and 138mm wide.