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)
41
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.
Change your look in an instant wearing these Derek Cardigan Lacerta with two pairs of magnetic polarized clip-ons. When combined with a pair of solid or mirror clip-ons, this pair is prepared to provide both anti-glare function and 100% UV protection. Made of acetate on the frame front and metal on the temples, the timeless rectangular frame brings a relaxed fit and a stylish finish to your everyday styling.
