Optical Glass Prismatic Lenses - Ground and polished to precision optical standards - bevel edged and mounted in interchangeable plastic frame. · It Tilts - Adjustable pivots allow the visor to be tilted out of the way when not needed and at your fingertips when you need magnification. · Adjustable Headband - Conforms to fit all head sizes - fabricated from a special blend lightweight material - comfortable when worn for long periods of time. · High Impact Visor - Provides a tough, durable, always new appearance. · Genuine Leather Comfort Band- Padded with orthopedic felt adds to comfort.