The Anon Men's M1 Goggles offer the original in effortless lens change innovation utilizing rare earth magnets at six points on the frame to set the benchmark for quick and accurate pull-and-switch lens change outs, and an ultra-secure lens to frame seal. The M1 offers a medium fit with comfortable Triple Layer Face Foam. All anon frames are engineered with helmet compatibility as an integral design consideration. The Silver Solex (18% VLT) Lens is for sunny days and bright conditions. This model also includes a spare Graybird lens (85-55% VLT) for darker conditions. All anon. lenses provide 100% protection from harmful UV rays and exceed ANSI Z87.1 impact test standards.