Eye protection. It's not what it used to be. With advancements in technology, sleekness in design, and a better understanding of the potential dangers in the game, more and more players are opting for the half shield visor. The Bauer Pro-Clip Replacement Lens works in conjuntion with the HDO Pro-Clip replacement system. You buy the original system (HDO Pro-Clip Visor) one time, and then replace the visor as needed with this set. This allows for a more affordable method to keep your visor as sharp as the day you bought it. These replacement lenses are easily attached via the Quick Click II technology, whiche allows for tool-less shield replacement. That's right. No tools required. Switch out lenses in between shifts.HDO Pro-Clip replacement lenses feature patented High Definition optics that sharpen edges and improve depth of field perception, allowing you to see through the visor with enhanced clarity. Likewise, interior anti-fog coating keeps things crystal, while an extra does of anti stratch does the same to the exterior. All three work in unison to provide a sharp view of the game - no longer will the visor hinder your site. And with CSA, HECC, and CE certifications, you know it's safe. Includes two replacement lenses.