The Quartz series of masks feature a unique swiveling Quick Releasing buckle that simplifies donning and doffing. A quick push of the release button separates the strap from the mask - No more pulled hair or tangles. A Large Single lens for a panoramic view made of tempered glass. Soft Touch finger pads aid in mask clearing. Mask Skirt is made of Hypo-allergenic, high-grade silicone, skirt fits a wide variety of faces