Lens Features ** 1.5mm thick lenses, the same as original’s, guarantee to fit your oakley Crankshaft sunglasses securely, won’t pop out any more ** Polarized with 100% UV protection, blocking all harmful UVA, UVB, UVC light waves (up to 400nm), reduces glare and enhances contrast in a better way ** Anti-scratch Protective Coating and Impact Resistant : Meets ANSI Z80.3, ISO 12312-1:2013, and AS/NZS 1067:2003 standards & ANSI Z87.1 high mass, high velocity impact standards ** Anti reflective to offer great clarity and others can’t see the wearer's eyes ** The Light Transmission of black lenses is 5% and the others are about 8%, you can relax your eyes in harsh light. (don’t wear the lenses indoor or driving in low glare environment) Check your frame model # and find the correct one These lenses fit oakley Crankshaft frame which the sku # is starting with OO9239 1-xxx , Don't fit Oakley Crankcase. If you are not sure, please don't hesitate to contact us. How to check lenses’ polarization Method 1 : Using the polarization test card we provided Method 2 : Hold one lens in front of the other and while looking through both of them, rotate one. At a certain angle they will black out, blocking all light transmission. Choose Us, You Won’t Go Wrong ※ All messages will be responded in 24 hours ※ 1 year warranty against manufacture defects ※ 60 days money back DISCLAIMER Prizo is not affiliated with Oakley in any capacity, any usage of Oakley is only to describe those products. Prizo lenses are made by Prizo Optics and are not Oakley products.