ROSSO Mineral HMC lenses are made from high-quality mineral material. These lenses provide superior optical clarity and are durable for long-term use. HMC (Hard Multi-Coating) technology protects the lens surface from scratches, water, oil, and dust particles, making cleaning easier and extending the lens's lifespan. ROSSO Mineral HMC lenses are an ideal choice, especially for users who require superior optical performance and durability. They are grey, green and brown colors.