Used twice. Vision Cylindrical Carbonic-x lens for clarity and impact resistance with built-in Airflow technology for active ventilation Fog-X anti-fog inner lens for fog-free performance Available with ChromaPop™ lens: ChromaPop™ enhances contrast and natural color to make the details pop Provides 100% protection against UVA / UVB Fit / Integration Designed for ultimate integration with Smith helmets for maximum comfort, venting and fog-free performance Dual-slide strap for easy size adjustment Ultra-wide, silicone-backed strap stays put Two-layer DriWix face foam wicks moisture for a fog-free fit Responsive Fit frame adjusts to your face for a precise, comfortable fit Medium fit; Available in Low Bridge Fit for faces with a lower nose bridge and/or a wide or high cheekbone shape