Stock racing has taken the sports scene by storm. While the cut offs and tank tops dress code wouldn't fly at southern horse races, you can wear the Smith Photochromic Dover Sunglasses at both events. From Louisville to Dover, this lightweight and durable set of shades protects your eyeballs from harmful UV rays without cutting color clarity. You'll be able to watch your driver or cheer for your gelding in bright light and when small clouds drift by since these lenses automatically lighten and darken to adapt for the light changes. And thanks to the Techlite glass lenses, you won't have to deal with scratched lenses two months into your whirlwind spectating tour glass resists scratches better than plastic. The antireflective and hydroleophobic coatings enhance visual clarity, minimize eye strain from back light glare, and repel moisture, grease, and grime. Watching cars race around the world's fastest oval for hours on end kicks out soot and dust at least your sunglasses won't be caked with a thick layer of crud, even if your tank top is now an off shade of gray.