After a long day on the bike, you should be thinking about cracking open a cold one with your buds, not sore spots behind your ears. Ready for the trail, road, or CX course, the Smith Ruckus Performance Sunglasses are made for all-day comfort with thin, non-slip temples that are designed to work with and around your helmet. The raised-brow design with two interchangeable ChromaPop™ lenses gives you great peripheral vision in the riding position and adds enhanced color and detail to your view. When the afternoon sun starts to dip, easily swap lenses using our PivLock™ technology and get ready to enjoy the sunset from the saddle.Smith\'s most versatile lens that uses photochromic technology for varying light conditions. This lens shifts from clear to gray when exposed to sunlight so you can comfortably wear your sunglasses in a variety of lighting environments in most conditions.VisionCarbonic lenses offer impact resistance and clear optics.Ignitor lenses for low-light situations.100% UV protection.FrameLightweight, flexible and durable TR90 frame.AutoLock hinges hold frames open for easy one-hand on and off.Fit / IntegrationMedium-large fit, large coverage.Megol temple and nose pads provide non-slip grip so glasses stay put.What\'s IncludedIncludes spare ChromaPop Contrast Rose lens, performance case, and microfiber bag with internal sleeve