Lazer Magneto 1 M1-M Photochromic Sunglasses Strap mounts provided with the glasses connect to any helmet strap; these mounts contain a powerful magnet that mates to the two magnets mounted in the shortened sunglass bows Second set of standard ear-mount bows are included; easily interchangeable Magnetic interface provides a secure and stable mount and allows a larger range of adjustability for the glasses both vertically and horizontally Includes hard case for storage and cleaning bag