With Its Vented Lens, Sierra Manages Vision-Robbing Condensation, While Providing Comfort And Optical Performance At The Same Time.Features:- Double Lens- Uv Protection- Flow-Tech® Venting- Anti-Fog Treatment P80+- Optical Clip Compatible- Carbo Glas® Anti-ScratchSpecifications:- Weight: 107gGoggle Measurements: - Lens Width: 165 Mm- Lens Height: 81 Mm- Frame Width: 190 Mm- Frame Height: 86 Mm