The Eye Safety System (ESS) Advancer V-12 is ideal for all tactical applications where the operator is serious about protecting his eyesight. Equipped with the patented Adjustable Ventilation System (AVS) technology, the Advancer V-12's ballistic lenses open and close to regulate ventilation and filtration. This goggle can adapt to its environment with a simple click of the lenses, increasing or decreasing airflow on the move. The AVS eliminates fogging, and the lenses can be snapped closed for maximum filtration, sealing out sand and dust. The Advancer V-12 goggle includes clear and smoke gray ballistic lenses, a protective Lens Pod, SpeedSleeve goggle cover, and protective V-12 Hard Case. The "SR" economy version is also available.