It's like I'm not wearing glasses! They don't have much weight so they don't slide, they just rest softly. The rimless frame is so minimal I barely notice it from external appearance. The edges of the lenses just melt away visually to me and others. Usually these types of frames are more difficult to make and are more expensive, these seem solid. I did make sure to get the PC lenses so that the lenses are more shatterproof since on this model they have less frame support