New Tilos Double Lens Panoramic View Scuba Diving & Snorkeling Mask with Purge (Black Frame/Clear Silicone) Patented innovative Panoramic technology allows the glass joint to appear invisible when worn by the user creating a truly uninterrupted panoramic view Patented channeled skirt design directs purged bubbles away from view Tempered glass lenses Stylish Look Tilos Quality Construction Nose Purge is easy to use and efficient Soft pliable yet durable silicone skirt for comfort Soft nose for easy equalizing Wide adjustable silicone mask strap for secure comfortable fit