This 12-pack of Cordova Slammer Clear Wraparound Safety Glasses is suitable for wearing over your favorite prescription lenses in a variety of situations, including carpentry; yard work and lawn care, remodeling projects and installations. Unlike most prescription lenses, this safety eyewear feature scratch-resistant lenses, protecting your eyes and glasses from dangerous and annoying debris. The polycarbonate construction of these safety eye glasses makes them incredibly lightweight. They won't weigh you down while you get to work. The 12-pair pack was designed with the Pro in mind and allows you to keep your team's eyes and glasses safe over through even the toughest series of projects.