The Radians Revelation(TM) offers 5-position ratchet plus 4-position telescoping temples for superior fit. 16 lens colors to choose from for all your safety glass needs. The Revelation(TM) is also available in a polarized version.Features: 5-position ratchet temples provides a comfortable safety glass fit. 4-position temple length adjustment. Soft non-slip rubber nose pad with self adjusting fingers. Ventilation channel between safety lens and protective frame provides extra fog control. Polarized lens option 99.9% UV protection. Safety glasses meet ANSI Z87.1 + standards.