Z-Three-001 Narrow material_Metal Shape is based on a

Shape is based on a long-standing best seller which looks terrific on many face shapes

and craftsmanship

and working on your computer

Ultra premium construction:  This frame alone would sell for over $200 in an optical shop

Z-Three-001 Narrow material_Metal Shape is based on aSightLine 3001 is with a playful color palette will look great while giving you great vision. Narrow fit with a spring hinge for comfort. OK so why so cheap? This frame is not like the other Sightline frames. The spring hinge is plastic and therefore the longevity is very limited. This frame is not suitable for optical eyeglasses these a Walmart quality. Peepers progressive uses a similar construction on their progressive readers but they charge $$$.