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).
Your lens height (mm)
42
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.
The highly flexible Derek Cardigan Sid offers comfort in a stylish package. This frame is ideal for small to medium faces, with wider foreheads and angular features. The thin rounded lenses perfectly showcase the eyes, complemented by the gleaming details at the temple for a tasteful finish.
