The Altitude Master is an 8 base wraparound sport frame engineered in Japan for demanding outdoor use. Its ergonomic geometry promotes ventilation and a wide field of vision, while helmet-compatible temples and adjustable nose pads with titanium-reinforced tips deliver a secure, customized fit. The D+ therapeutic-grade polycarbonate lenses are shatterproof, with anti-reflective and oleophobic interior coatings that repel water and oil. The Copper Mirror variant transmits 10.03% of visible light and 6.06% of blue light, while blocking 100% of UVA and UVB radiation.