Crews® rocks the industry with the launch of the aspheric safety lens. Crews® exclusive Carbon Cut Technology ™ applies lessons learned from premium optical industries in producing one of the most important technical advances in safety spectacles. Click here for more information about the Medallion Collection®. Triwear Features: 180 degrees Of clear vision Single aspheric lens design Lifetime frame warranty Bayonet temple design Gel nose piece Filters 99% of U.V. radiation Meets or exceeds ANSI Z87.1 safety standards