In Skiing And Snowboarding, Taking The Fall Line Refers To The Line Down A Mountain That Is Most Directly Downhill. Inspired By Line Miner And Fusing The Large field Of View From A Rimless Goggle, Fall Line M Is The Latest Addition To Oakley’S Line Series Of Cylindrical Style Snow Goggles. With A Mid-Sized fit, Fall Line M Is Optimized For A Wide Variety Of Faces And Is Engineered To fit Perfectly With Most Helmets. Designed With Oakley’S Ridgelock Technology, Changing Lenses Is Quick And Easy While Still Allowing For A Complete Lens Seal To Prevent Harsh Conditions From Penetrating Into Your Goggle.Features:- Available In Prizmâ„¢ Lens Technology Options- Fit: Medium- Microbag Included For Storage And Lens Cleaning- Ridgelock Lens Change System- Discreet Frame Notches At Temples Provide Compatibility With Most Prescription Eyewear- Wide 40mm Wide Adjustable Strap With Silicone Lining For A More Secure Fit- Flexible O Matter® Chassis Conforms To Your Face Comfortably, Even In Extreme Cold- Rimless Frame Design Provides Increased Visibility And Improved Helmet Compatibility- All-Day Comfort Of Triple-Layer Face Foam With Moisture Wicking Polar Fleece Lining- Injection-Molded Plutonite® Lens Material Provides 100% Protection Against Uva / Uvb / Uvc & Harmful Blue Light Up To 400nm- Optically Correct Dual Lens With F3 Anti-Fog Coating- Glare Reduction And Tuned Light Transmission Of Iridium® Lens Coating (Optional)- Meets Impact Requirements Based On Ansi Z87.1 And En 166 Standards