Our 11S Series safety glasses have a polycarbonate frame and a 100% polycarbonate lens with a 9 base curve. They are scratch and impact resistant, meeting ANSI Z87.1 standard, and provide 99.99% UV protection. These safety glasses feature a 2 in 1 design with a removable protective foam gasket and an adjustable & removable headband. You can use these glasses as spoggles or as regular safety glasses. They also have an adjustable soft TPR nose pads and flexible soft and anti-slip TPE temple tips.