This kit contains a polarizing filter (PL), a filter storage box and a cleaning cloth. The functionality and advantage of this filter is explained in the following texts and in the pictures.
The CamKix polarizing filter (PL) filters out scattered light from a certain angle to prevent reflections, for example in windows or water. So, when you keep the camera at that specific angle, you will get the best results.
Besides better footage of transparent items such as water or glass, the polarizing filter also allows you to capture outdoor scenes with deeper color tones. For example: saturated blue skies with dramatic clouds, improved appearance of trees or other vegetation, extra colorful rainbows, etc.
If the original source footage that you capture with your DJI Mavic 2 Pro camera is better, it will be easier to get enhanced results in post production. Using CamKix filters will help you achieve that.