The Original Line Miner Goggle Was Created With The Purpose Of Providing The Ultimate In Peripheral Vision, With A Cylindrical-Style Design. We Were Able To Pull The Goggle In Closer To Your Face Than Ever Before, Allowing For Incredible Downward And Side-To-Side Periphery. With A Mid-Sized fit, Line Miner M Is Optimized For A Wide Variety Of Faces And Is Engineered To fit Perfectly With Most Helmets.Features:- Available In Prizm™ Lens Technology Options- Fit: Medium- Microbag Included For Storage And Lens Cleaning- Discreet Frame Notches At Temples Provide Compatibility With Most Prescription Eyewear- Wide 4mm Wide Adjustable Strap With Silicone Lining For A More Secure Fit- Flexible O Matter® Chassis Conforms To Your Face Comfortably, Even In Extreme Cold- Low-Profile 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)Specifications:- Light Transmission: 17%- Light Conditions: Sun & Clouds- Contrast: Increased