The Oakley Flak Jacket XLJ Replacement Lenses let you adapt your eyewear for any mission or environment. Designed for precision and durability, these lenses feature Oakley's patented High Definition Optics (HDO) for superior clarity, impact resistance, and 100% UV protection. Whether you're on the range, on duty, or off the clock, they deliver unmatched optical performance and resilience you can depend on.