STORMtech Pro Omega Polarised Sunglasses Brushed Steel Blue 9STEC317-2have the familar aviator shape to the front frame with contrasting White, horizontal detailing across the nose bridge. Double hinge temples for maximum comfort. Finished in a strong brushed steel Blue magnesium technology frame. STORMtech Pro are performance sunglasses for the active sports enthusiast. Whether youre on the piste or cycling down a mountain, Storm Tech Pro sunglasses will never let you down. Made from the finest components theyre durable yet light. The metal sunglasses feature a magnesium aluminium alloy frame which is lighter & more pliable than titanium. The nickel free compound is more resistant to corrosion & can sustain high impact without deformity. All STORMtech Pro sunglasses come with polarised polycarbonate lenses reducing glare from reflective surfaces such as water, snow, tarmac & glass.