DSAF = Double Screen Anti Fog, these visors come with a DSAF insert and makes a nice upgrade over the standard visor.
Visor tint: Dark smoke, Mirror, & Multi-layer visors all have the same amount of darkness and can be compared to a pair of Oakleys
Photochromic Visors: Photochromic visors automatically darken when exposed to sunlight, similar to transition lenses.
Mirror Visors: Mirrored visors are highly reflective (like a mirror) there is a substantial color shift depending on the angle at which you view them. This does not apply to silver mirror.
Multi-layer Visors: Multi-layer visors offer a deeper, richer color. They have less color shift and are more consistently a solid color.