6 Base Curvature - The base curvature corresponds to the curve of the lens. The higher the number, the higher the curve. 6 base styles have a “flatter” look. 8-9 base curves hug closer to the face.
Cellulose Propionate - A strong, flexible frame material that is lighter than traditional acetate and more temperature resistant.
Carbonic TLT - Engineered to be the most impact resistant lens material in the world. Carbonic TLT lenses are optically corrected to maximize visual clarity and object definition.
Visual distortion occurs when light waves hit an aggressively-curved lens causing it to bend or distort an objects true size or position. Imagine looking through a fish eye lens. What your eye normally sees, is stretched beyond reality. Tapered Lens Technology corrects the distortion by progressively tapering the lens from the optical center towards the outer edges. Light waves are thereby delivered straight to your eye resulting in zero distortion and true optical clarity. What you see is what you get.
Smith Polarization - It’s like noise-canceling headphones for your eyes. Glare off of horizontal surfaces like snow, water, and asphalt, decreases depth perception, reduces visual acuity, and causes eye fatigue. Smith precisely aligns the polarized visual layer inside the lenses to filter out 99.9% of this “visual static” for a finely tuned view of the action.
These measurements include the width of the lens, the width of the bridge and the width of the arms/temples measured in millimeters.
For example, a 56-17-144 frame:
1) Lens Width - 56mm
2) Bridge Width - 17mm
3) Arm/Temple Width - 144mm