You love your Half Jacket 2. 0s. Now customize their look with the Oakley Half Jacket 2. 0 Replacement Lens. These replacements offer precision clarity, impact resistance, and the UV filtering performance of Oakley's HDO High Definition Optics. 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.