The Pentax ZT55 Prescription Safety Glasses is a non-conductive frame designed to wrap around the face. Available in crystal/orange, crystal/gray and charcoal, these Pentax Prescription Safety Glasses come with a removable foam gasket. In addition, these Pentax Safety Glasses are prescription available and meet the ANSI Z87.1 industry standards. Plus, the ZT55 Pentax Safety Glasses have passed the requirements of a modified ASTM D149-09 test for dielectric strength, and did not conduct electricity up to 1,000 volts for 60 seconds. For more options check out our Pentax Safety Glasses collection.