Ultra-Spec 2001 OTG Visitor Specs Safety Glasses are ideal for office workers who regularly wear glasses to safely enter factory areas, plant floors, construction sites etc.. They are also well-suited for wear by guests during plant visits, factory inspections, tours and other occasions. The wraparound uni-lens design is enlarged to fit easily over most prescription eyewear, and the vented side shields offer extra protection against flying debris. The adjustable temple length provides a custom fit, and the padded temple tips ensure longwearing comfort.