Serengeti Bormio Progressive Prescription Frame Color:Satin Dark Tortoise Bridge 16mm Fit: Medium

Bridge 16mm Fit:  Medium

Lens Sizes:  52x37

Bridge 20mm (Med example) Frame Features: Solder Joints warrantied for Life

Assembled with top quality Barberini mineral crystal lenses

Reaching both ends of the color spectrum

Serengeti Bormio Progressive Prescription Frame Color:Satin Dark Tortoise Bridge 16mm Fit: MediumSERENGETI BORMIO PROGRESSSIVE PRESCRIPTION Serengeti Bormio is light weight and fits comfortable on your nose. It uses 555nm lens and then adds a reflective blue coating that blocks more light. This makes it idea for boating and water activities and enhances the lens' eye protecting capabilities. The Bormio lenses use Serengeti's light weight Trivex lenses. All Serengeti lenses offer the latest in photochromic technology, which constantly lightens and