The Oakley Flak Draft Prizm Sunglasses are there by your side to ensure premium and adaptive optical clarity. The Flak features a classic frame that's equal parts lightweight and stress-resistant. Meanwhile, the Unobtainum temple and nose pads provide a secure fit that becomes more grippy when sweat is introduced. More importantly, though, the Flak is equipped with Oakley's Plutonite Prizm lenses, which not only protect your eyes from the sun's harmful UVA, UVB, and UVC rays, but also promote enhanced optical clarity, reduce glare, and maximize contrast. 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.