There are plenty of different reasons why these eyeglasses are a great idea. For one, plenty of people don’t need to wear their glasses all of the time. So flipping them like this keeps them pretty handy. Also, there are people who already wear their glasses on their heads, despite not always holding in place very well.
Lookie Lous Headbands were developed by Kelly Coty. They can easily rest on users’ heads while not in use because they are flexible, smooth, and lightweight. When they flip down, they have a small notch cut into them so that they can rest comfortably on your nose.
They were principally designed to provide magnification for small print and UV protection, and are available in a magnification of 0, 1.0, 1.5, or 2.0. I wonder when you’ll be able to put in your normal prescription inside of these – that would really be very handy.