Great vision, great comfort, equipped With an Anti-Fog lens, FREEZE Will be your best companion all day long. Technology: Double lens:- Creation Of a dual-pane thermal barrier between the cold dry outside air and the moisture generated by intense activity prevents distracting condensation from farming Uv protection:- All Bolléf$’ lenses block harmful LIVA/BVB to 400 nanometers rays up Flow-tech venting:- Engmeered venting systems in each frame promote directional airflow across the inside surface Of the lens, reducing the potential for moisture build up and maintaining your pristine visionAnti-fog treatment:- NO fogging On your eyewear under any circumstance Not only repels the fag that clouds your vision but simply revved by an application of moisture Available On all Polarized B base models.