Pyramex Defiant is a single-lens eyeshield design with adjustable temples. These Pyramex Safety Glasses can be set to four different temple lengths for customizable comfort. The Pyramex Defiant Glasses feature "tilt type" adjustment that lets you tilt the lens for optimum visibility. Pyramex has designed this tough little eye shield to exceed the ANSI Z87.1-2003 High Velocity Impact Standards! The Pyramex Defiant will be an important part of your laboratory equipment.