Cold weather and tight, Enduro- like conditions is no match for the Vision 8 Dual Pane lens. Tested by top racers worldwide, the Vision 8 Double Pane Vented Lens was designed to tackle the most extreme riding situations. The VISION Dual Pane vented lens was specifically developed to keep air flowing inside the goggle and condensation to a minimum. Strategically placed vent holes across the top and sides allow for plenty of airflow. The dual pane lens technology keeps the cold outside air from causing any fog issues on the inside. All lenses have 100% UVA protection.Alpinestars official replacement parts. LENS: Optically correct, Polycarbonate material is the strongest and clearest in its class. Dual Pane technology keeps the cold on the outside from creating fog or condensation on the inner lens. Strategically placed lens vent holes with 100PPI foam keep the air flowing. 100% UVA protection. Integrated tear- off posts allow you to stack as many as 28 tear- offs. Anti- fog coating helps to eliminate condensation on the inside of the lens. Hard- coat is applied to the outer side of the lens to help with durability. Seven key hole locking system assures a solid fit in the VISION frames.