Lenses are not like diamonds; they don't last forever. When the view
from you Proto goggles starts to get hazy then its time for a Proto
Switch Replacement Thermal Lens. Proto introduced the first tirodial
lens for an optically clear view of the paintball field. The dual pane
design is the best defense against goggle fog.
A Proto Switch Replacement Thermal Lens comes in several color options.
Clear is the best all around choice if you just want one lens. Yellow
will help brighten your view on dim overcast days while Smoke will help
cut glare and eye strain on really bright ones. The Mirror lens has a
smoke tint and looks intimidating!