OTG goggles reinforced with lip seal , visible light transmission: approx. 7 % ,color: brown 180-315 D LB8 IR LB5 M LB6 LV CE (OD8+) >315-532 DI LB7 R LB7Y M LB8Y LV CE (OD8+) 750-1100 D LB6 I LB9 R LB8 LV CE (OD9+) 9000-11500 D LB5 I LB4 LV CE (OD5+)