The Pentax ZT500 Prescription Safety Glasses is a non-conductive frame designed to wrap around the face. Available in red and blue, these Pentax Prescription Safety Glasses come with a head strap attached to the temple tip. In addition, these Pentax Safety Glasses are prescription available and meet the ANSI Z87.1 industry standards. Plus, the ZT500 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.