When traveling for long periods of time, it's important to minimize eye fatigue. A set of glasses with interchangeable polarizing lenses can help you do just that. However, eye care is equally significant for active vacations, such as cycling, etc. The package includes glasses, four pairs of interchangeable lenses, a box for their storage and lens care products. Most importantly, there is a yellow lens, which will help the driver to see better in cloudy weather or at night.