Help him avoid the next tree with the new 02 XS Replacement Lens. Its Lexan material provides 100% protection against UVA, UVB, UVC, and harmful blue light up to 400nm. Reduced cranial geometry gives the same optical quality your Oakley goggles give you, but they're designed for children. Oakley also added an F2 anti-fog coating for increased clarity on misty mountains. Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.