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.
Nylon Grilamid - These frames are borne from tempered steel molds. Grilamid nylon is flexible in all temperatures, shatter resistant, and possesses a high “memory” to ensure the frame retains its shape and fit.
Polycarbonate - UV400 protection lurks beneath the dark exterior of these lenses. Their polycarbonate lenses are distortion-free, optically correct and have maximum scratch and shatter resistance. These lenses are available in grey, bronze, fashion gradients and chrome coatings.
100% UV Protection - To protect your eyes from those harmful rays these lenses feature 100% UV protection.
These measurements include the width of the lens, the width of the bridge, the height of the lens and the length of the arms measured in millimeters.
For example, a 56-17-45-144 frame:
1) Lens Width - 56mm
2) Bridge Width - 17mm
3) Lens Height - 45mm
4) Arm Length - 144mm