Description:  VISION ABOVE ALL - Precision optics designed specifically for aviators. Our top-of-the-line lenses feature notch filtering technology for contrast, clarity, and performance that is second to none. Each lens option utilizes special thin-film coating technologies to dial in specific amounts of visible light (VLT) suited to pilot preferences and light levels for typical routes. The SKY 9 (Darkest) lens is perfect for bubble canopies, extremely bright flying conditions, and light sensitive pilots. LENS TECHNOLOGY -  lenses are Stevvex original top-of-the-line pilot lenses, crafted from German glass. SKY technology combines eleven elements, including rare-earth neodymium, molecularly bonded within a crystalline lens. Thirteen proprietary coatings block harmful UV and infrared heat while providing unmatched color and clarity. NOTCH FILTERING - BLOCKS UV & infrared heat, keeping eyes cool and moist even in the brightest cockpit lighting conditions. Notch filtering technology balances color and allows use with cell phones or other screens while providing world-class protection, making this lens superior to others on the market. FRAME TECHNOLOGY - Ascent's titanium alloy frame is a blend of updated aviator styling and some of the most advanced frame construction available. Light, strong and flexible titanium alloy temple pieces taper off to less than 1.0 mm thick, seamlessly conforming to your head and headset for any duration flight. Designed specifically for headsets, and tested for fit with oxygen masks. Rubberized nose pads add comfort on long days in the seat. BUILT TO LAST - SCRATCH-RESISTANT, easy to clean lenses don’t haze over like cheap plastic lenses. All of our products are backed by an industry leading warranty & forever policy. Brand Name: STEVVEX Sunglasses Model Number: STS9NC17097TRX Gender: MEN Style: Pilot Department Name: Adult Frame Material: Stainless Steel Lenses Optical Attribute: UV400 Lenses Optical Attribute: Mirror Lenses Optical Attribute: Anti-Reflective Lenses Optical Attribute: Polarized Lenses Optical Attribute: Photochromic Eyewear Type: Sunglasses Lens Height: 52mm Lenses Material: TAC Item Type: Eyewear Lens Width: 65mm