The Ostra Bio Black Line Goggles are made to ward off super-bright days and harmful doses of ultraviolet radiation, and they're for high alpine glaciers where visibility and protection are necessary. A dark smoke lens shields us from blinding glares and hazardous rays, and these goggles are built with plant-based materials that are highly functional and durable for our next adventure. An anti-fog treatment ensures we never find our vision clouded, and perfect fit Tri-density face foam makes for absolute comfort on the mountain.