Frame size is determined by the three key measurements found inside the frame arm: lens width (from 31-60mm), bridge width (from 12-31mm), and arm length (from 115-155mm).
Lens height is essential for multifocal prescriptions, such as Progressives, which require a minimum measurement of 28-30mm. They are also recommended for Rx sunglasses.
- Progressive Eligible
- Sunglasses Eligible
- Plastic
- Spring Hinges
The Crux frame features a classic design, with a thoroughly modern aesthetic. The rounded lenses look great against angular features and square jawlines, while the keyhole nose bridge is comfortable for wider noses. Flexible spring hinged arms provide a custom fit for small to medium faces, and feature Derek Cardigan’s signature mathematical symbols at the tips.
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