Serfas' Vents have ultra-light frames that fit so well you'll forget you're wearing glasses. Plus, the 100% UVA/UVB protected lenses deliver excellent optics and strong impact resistance. Non-slip nose pads and helmet-optimized temples keep them in place. There are also vents to prevent fogging. You'll also like the lack of frames on the bottom of the lenses so you can look down with nothing blocking the view.