The SCOTT Glass Primal, Hustle, Split, and Tyrant DL ACS replacement double lens comes equipped with an advanced ventilation system known as the Air Control System (ACS). This innovative feature ensures optimal airflow, preventing fogging and ensuring clear vision during your off-road adventures. Designed specifically for use with Hustle, Primal, Split OTG, and Tyrant goggles, this high-quality double lens provides enhanced durability and performance under extreme conditions. Whether you're navigating through dusty trails or tackling muddy terrains, this replacement lens ensures that your vision remains unobstructed, offering superior clarity and protection. SCOTT's commitment to quality and advanced technology makes this replacement lens a must-have for any serious off-road enthusiast.