The model VISION is our most popular model for glass filters and coated plastic filters because it fits comfortably and can be indivi-dually adjusted. The flexible Duo-Flex side pieces can be adjusted in length and angle to eve­rybody's head shape, and the soft ends prevent painful pressure on the ears, even after a long day. What makes the VISION so special is the curved filters (basic curve 5) which provide a wide field of view and a sporty look. Due to the curved lenses, it is not suitable for all filters. It does not fit over correction glasses.