The Altitude Master is an 8 base sport frame engineered in Japan for demanding outdoor use, with an ergonomic construction that promotes ventilation and expands the field of vision. Temples are shaped for helmet compatibility, while adjustable nose pads and temple tips deliver a secure, customized fit reinforced by a grade 2 titanium core. The D+ Indigo Mirror lens is crafted from shatterproof polycarbonate with anti-reflective and oleophobic interior coatings, providing 100% UVA/UVB protection alongside additional infrared screening via the mirror coating.
