The large optical lenses of the special sports goggles significantly improve field of vision, while lens fogging (common with clip-in systems or spectacles worn beneath ski goggles) is almost completely prevented. Moreover, the risk of injury associated with falls when wearing normal spectacles beneath ski goggles or a helmet visor is virtually eliminated with SK-X goggles. At higher altitudes in particular, contact lens wearers complain of dry eyes and thus problems with contact lenses. By contrast, SK-X ski goggles promise consistent image quality.