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)
37
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 Derek Cardigan Tonak glasses combine the best of modern and throwback styling to create an irresistibly sleek look. The half-rim rectangular frames are defined by sleek metal lines across the top, with coordinating slim plastic arms for a streamlines finish. Easy to wear thanks to adjustable plastic nose pads and a lightweight fit, the Tonak glasses will bring an effortless feel to whatever you’re wearing.
