The product comes with quality packaging, taken care of externally while internally we find a plastic package to carry and store the filter itself.

(in the video you will find, unboxing, first impressions, tests and review) I will

not dwell on the technical specifications since they are already widely mentioned in the product description but, I will tell you about my user experience and impressions.
As soon as we open the package, we immediately find the filter in our hand, housed in its transport package.
It immediately shows that the filter is of excellent workmanship as far as the materials are concerned, the glass coating is easily visible because it tends to give a greenish reflection to the lens but, this reflection does not change the tonal range that we will have in the photo, but the filter tends to lose about a stop of light.
I immediately tested the product and it was highly efficient, first of all because it does not tend to create lens flare deriving from the presence of lights and headlights, secondly, the adjustable polarization manages to bring up to two good levels and also to cancel reflections on water and shiny objects.
The loss instead of detail is almost negligible.
The tests were carried out on a Sony A7M2 with a 50 F1.8 lens.

In conclusion, it is an excellent product that has a good quality/price ratio, my final rating is 5 stars