A brand name that left little to the imagination. Remember my Dad had a pair of Reactolite Rapide glasses and when we were in the car as a family, my sister and I would watch to see the lenses in his glasses turn darker as we emerged from a road tunnel into the sunshine. 70s science was amazing!
Another very 1970s brand of tinted lens glasses was Foster Grant. They still sell but forty years back, they were marketed as the ultimate in cool.