The 010 model is designed for hiking at high altitudes but also for very windy conditions as demonstrated by the removable side bulkheads in soft rubber that protect from the glare of reflected sun rays and wind. The glasses are extremely light (28 grams) and are molded in Grilamid while the inside of the temples and the nose pad are in anti-slip Megol rubber. Four lenses are available for the 0   + info