The Pentax ZT35 Prescription Safety Glasses is a tight-fitting, non-conductive frame designed to wrap around the face. Available in matte gray/black, shiny black/blue and camouflage, these Safety Glasses feature a removable Skirt Seal foam gasket which reduces fogging. The ZT35 Prescription Safety Glasses also feature removable temples and a temple replacement head strap. In addition, the ZT35 Pentax Safety Glasses meet the ANSI Z87.1 industry standards and 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.