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)
39
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.
Classically intellectual, the Sao glasses by Derek Cardigan have a sophisticated vibe, perfect for sharpening up your everyday attire. The rectangular shape is both timeless and classy, defined by slim metal lines and integrated nose pads for a vintage flair. Spring hinges ensure durability, so you can rely on the Sao frames for a comfy fit all week long.
