Complete with Oakley's second-to-none HDO optics in a host of tints, the Target Line M Goggles are set to take the snow world by storm. (Note: The 'M' stands for Medium.) Dual Vented Lenses Dual vents and F3 anti-fog coating keep your vision crystal clear. O Matter Chassis Flexible O Matter frame conforms to your face and remains flexible even in extreme cold. Plutonite Lens Material Impact resistant, blocks 100% of UVA, UVB, UVC, and harmful blue light. Only Plutonite stands up to Oakley's performance standards. Medium Fit This product may contain chemicals known to the State of California to cause cancer, or birth defects, or other reproductive harm.