This pair of sunglasses is perfect for anyone with an active lifestyle. They provide all-day comfort of durable, ultra-lightweight titanium alloy. There are Unobtainium® earsocks that increase grip when you sweat. The nose pads have a new design which provides more comfort. They are made with air-filled silicone in a snag-free design and are adjustable for the comfort of a custom fit. The lenses are equipped with High Definition Optics for clarity, visual fidelity and impact resistance that meets all ANSI Z80.3 standards. They also provide UV protection of Plutonite lens material that filters out 100% of UVA / UVB / UVC & harmful blue light up to 400nm.