Classic shape with new levels of style and performance. We designed these shades to look good and fit comfortably on your face whether you're haulin' ass down a mountain trail or drinking beers in a Mexican cantina. No Slip: special grip coating to help eliminate slippage when sweating. No Bounce: the frame is snug and light-weight with a comfortable fit to prevent bouncing while running. All Polarized: glare-reducing polarized lenses and UV400 protection that blocks 100% of those harmful UVA and UVB rays. All Fun.