This shield fit my Bell 500. Size L helmet perfectly, much better than the Bell visor it replaced. Snaps in securely, with a good range of snap positions in their slots, and has good optics. The Wayfarer Green does a good job of filtering sunlight. The chrome colored beading around the outside eliminates any sharp edges. It gives a nice retro look to the helmet and attenuates the bubble head appearance of the Bell 500.