Phillips Model 100 radiation protective glasses offer a stylish aviator frame constructed of durable non-corrosive stainless steel. It features adjustable nose pads, spring hinges and side shields. This product offers our standard high quality, distortion-free SF-6 Schott glass radiation-reducing lenses with .75mm lead equivalency and 0.50mm lateral production. The Model 100 fits best for Medium to Large style heads.