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.
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- Progressive Eligible
- Sunglasses Eligible
- Plastic
- Spring Hinges
The Crater from Derek Cardigan is a style gem. The subtle cat-eye acetate shape is a low bridge fit frame, with slim arms that feature the brand's iconic mathematical symbols at the tips. Spring-hinged temples and integrated nose pads provide great feel and fit.
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