The unique distortion-free lens technology provides a 180-degree, wide-angle field of vision and lets the user experience a panoramic vision that's pure freedom for the eyes. The mask also features a comfortable silicone skirt, an attractive lightweight frame structure and an easy-to-adjust micro-buckle system. It comes in an eco-friendly, heavy-duty zippered EVA Case, not only to protect the Plexisolª lenses, but also to reduce PVC plastics waste.