Specifically designed for Nordic & Cross-Country skiing, D•CURVE's cylindrical Glider provides a wide field of vision with outstanding NASTEK optics and comes with an extra interchangeable lens for varying light conditions. Optimum ventilation and ergonomic design reduce airflow and prevent condensation whether you're skiing uphill or down. D•CURVE Glider's lightweight frame is extremely comfortable and the shield can be fully and easily raised. Comfort BioActivating, anti-microbial, 3-layer face foam protects your skin and stays comfortable all day long.