Description of Smith V-Ti Interchangeable Sunglasses :
For running, biking, or any other active pursuit, the Smith V-Ti Interchangeable Sunglasses give you a performance fit with the flexibility of interchangeable lenses for changing light conditions. Smith built the V-Ti’s frame with a Grilamid front and titanium arm components for light weight and maximum flex. Arm and nose pads provide a comfortable fit, and two extra pairs of lenses let you switch it up in cloudy or low light conditions.
Bottom Line: Performance eyewear for changing light.
So awesome for cycling. I forget I have them on they are so light. But somehow despite the light weight and comfy feel, they never shift when I'm looking over my shoulder etc. And eyes have yet to water, but maybe I'm not going fast enough.
These sunglasses are amazing. But you have to get the polarized ones to get the most out of them especially if you're going to be on the water, snow, or driving with wet pavement. They are extremely light and stay placed well on your face when running or outdoor activities. I have had mine for 2 summers now and they have cracked on the sides (they have a lifetime warranty so I hope they get replaced) , but I use them for wildland firefighting, and have taken a shot with a volleyball to the face, they lasted still longer then all others I have gone through. Great visibility A+ comfort