The K&F Concept 82mm ND100000 Optical Glass Filter Neutral Density 16.5 Stop ND comes in a typical plastic storage/protection case along with 3 microfibre cleaning cloths in sealed envelopes to keep then clean until needed. I see no reason why the microfibre cloths can't be re-used; they just ensure they are kept clean until you need them.

The ND100000 is dark enough to photograph the sun providing 16.5 stops of light reduction. Most ND filters will induce a colour shift in the photos. I took two photos of a white card: one at 1/160 s and one with the ND filter at 6 min 50 sec. Colour shift with the K&F Concept 82mm ND100000 was minimal. Using the eyedropper to correct white balance, there was a net difference of 150 Kelvin, which is negligible. I've posted comparison images with no processing and aonther with the same white balance applied and a +0.50 exposure increase on the ND photo to balance exposure. You can see a very subtle shift in colour, but, as I said, ALL ND filters will have some colour shift, even the US$100 - $200 ones.

The K&F ND100000 performs very well and is a great value.