The masks themselves are good, i love mine. The lenses changes quick and easy however they need replacing quite a bit. I used the yellow lens just the once and paint ran in the middle of dual pane just walking off the field so my guess is they are not sealed as well as the old lenses or Jt's etc.
The chrome lenses are also very good however scratch very very easy, fist time i wore that it scratched from next to no rubbing.
They are in truth probs the best masks i have owned for play, for reffing or marshaling i use proflex's as the lens are a bit cheaper and last a lot longer