"100%" goggles' innovative ForeCast mud riding goggle frame, which attaches to your "100%" original goggles' lens in place along with its roll-off mechanism. Significantly higher tear-off (49mm) and better ensured that mud does not get between the tear-off and the lens. The roll-off cassettes are of different sizes. The cassette on the side of the soiled tear-off is larger in size. Possibility of using films in addition. Fits all "100% goggles" frames.