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.
Propionate - These frames are crafted from high quality propionate, enjoy!
Happy Lens - SPY's color and contrast enhancing Happy Lens is the only lens that maximizes the sun's "good" rays. See better. Feel better. Perform better.
If you're not satisfied with your Happy Lens, return them to SPY within 14 days of purchase for a full refund.
100% UV Protection - The sun is harmful to our bodies and eyes, all Spy lenses are 100% UVA/UVB/UVC protected so you can worry about your goggle tan while Spy shields your eyes.
Polycarbonate - Polycarbonate lenses provide optically correct vision and are highly shatter-resistant.
Arc - Accurate Radius Curvature lenses are injected in a unique tapered shape to provide optically correct, distortion free viewing at all angles, ensuring against discomfort and eyestrain.
These measurements include the width of the lens, the width of the bridge and the length of the arms measured in millimeters.
For example, a 59-15-135 frame:
1) Lens Width - 59mm
2) Bridge Width - 15mm
3) Arm Length - 135mm