Upgrade your Oakley Flak Jacket XLJ with this custom replacement lens. The lens is made with mirror-coated technology that provides clear vision in bright sunlight. The green mirror color adds a stylish touch to your sunglasses. This lens is compatible only with Oakley brand sunglasses and is perfect for men who are looking to replace their old lenses. Whether you're using it for sports or everyday wear, this custom lens is a great choice for Oakley Flak Jacket XLJ owners.