Tilos 4 Window Panoramic Mask Quality Construction, Nose purge, Fits Medium to X-Large Faces Three windows for maximum vision, Soft pliable yet durable silicon skirt for comfort Soft nose for easy equalizing, Tempered glass, Stylish Look Adjustable mask strap, Purge is easy to use and efficient, Wide mask strap for secure comfortable fit, blue mask AUTHORIZED DEALER! FULL MANUFACTURERS WARRANTY!