USD 
Canadian
Also Available as a Reading Sunglass.
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Shape: Best fits medium or large faces with round, oval or heart/triangle shapes
Folding Arms: Arms Fold for Ultimate Portability
Bridge: Saddle-style bridge with adjustable silicone nosepads
Fit: (eye) 52, (bridge) 20, (temple) 145, 6-base curve
Finishing Treatment: Matte finish
Material: Monel metal, an extremely strong, corrosion-resistant alloy
Hinge: Traditional pin hinge
Neutral Grey:
Bright, direct sunPerfect for especially bright, direct sunlight. Offers rich color and contrast along with the highest available light reduction, unlike ordinary grey lenses that flatten light evenly across the spectrum.