USD 
Canadian
Shape: Modified, rectangular frame complements round or oval face shapes
Bridge: Saddle style, fixed bridge with embedded nose pads
Fit: (eye) 55, (bridge) 19, (temple) 128, 6-base curve
Finishing Treatment: Gloss finish
Material: High-grade injected nylon, lightweight and tough with superior fit and comfort
Hinge: Anti-corrosive spring that provides flexibility offering a secure, comfortable fit for various face shapes and sizes
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.