I am happy with the quality of the filters as the seller said they are very high quality, I have just received them and have already taken a few pictures, and I am very impressed with the quality of the pictures and the emotion in the pictures. The filter cover is of very good quality with velcro and very strong mesh, The brush is very soft and fluffy, looks natural, came with good packaging and the truth, I think some filters and professional photographic brush. I am positively surprised that the ratio between quality and price is very good. To congratulate the seller.

The three filters arrive well packaged with a case (for all three) and bags (one per filter) each filter does its job well, if used well the photos will be enhanced.

The filters are fine and good quality.
However the kit is advertised as including a Double Side Lens Cleaning Pen and that's not true. This is supported by the label on the product box as pictured. It did influence my choice of product because the pen as described on the amazon site looked to be a product of good quality and professionally designed.
I was supplied with a microfibre cleaning cloth, presumably as a substitute. This is more of an inconvenience than anything to me, but K&F are reputable suppliers and this is below par performance.

A long time ago I started looking for filters for my Canon camera that I now have with a Sigma 17-50 77mm lens. And since I'm not a professional or anything like that, it gave me something to spend some money on filters and then give them more recreational use. So I started looking for cheaper 77mm filters and buying them. In the box you have three filters, a wallet to carry these filters without getting dusty and a brush to clean them. Filter: The first is an ND 4 filter, commonly used for long exposure images. In my use, it gave me good image quality without any unusual hues being too obvious. Nothing that can't be easily fixed with a little color touch up. The second is a polarizing filter, whose intensity varies by rotating the filter itself. This is primarily used outdoors to remove unwanted reflections or add contrast to landscapes. If so, it's pretty dark, so you might as well run the ND filter times. Here we already find a little more vignetting than in the previous filter, perhaps because this one is variable instead of being a fixed filter as in the previous case. The third is the typical ultraviolet filter, which is generally recommended more than anything else to not rub a lens that costs a lot more than the filter itself. Pocket: Okay, it's just functional and what it's used for. The 77mm filters I bought in my suitcase fit easily and feel great. Brushing: Little by little, little by little, it's functional. You have two ends. One end has a silky surface and the other end is more of a regular brush with hair. In conclusion,

The cleaning brush cleans well and is soft. But the other side with the cleaning velvet is special. Usually only round here but two-sided once round and once triangular! This is extremely practical. The filters work as they should. I was able to take excellent photos in the strong sun this morning and just now in the evening. The filter means you don't have to close the aperture that much. That works really well. I am happy

K&F always deliver quality products no matter the price range and here is no different. All 3 lenses are of a high build quality featuring aluminium frames and glass lenses. The case included is well padded and I do not see any issue with storing these long term or in cramped spaces. The adjustment on the CPL filter is a little stiff, but I would assume it would loosen and be perfect over time when I use it more. On my kit lens, it performs very well and there is no negative changes to the final image output. Highly recommend for beginners

Images with these filters are as crisp and clean as without the filter, which is nice because now I can add extra fixation with ND and take long exposures during the day, and I can also reduce glare from bright objects with CPL and the UV filter makes it sky blue. separate in bright colors. The bag and cleaning tool is a very useful addition as it is very important for image quality and by stacking 2 of these filters you can have an extra SD card slot in the bag.

Nice fit, well made, handy case, no obvious optical aberrations but I'm not a professional photographer. I have the UV filter on a a lens protector.

Fantastic product with 3 different filters in a cute padded wallet

I ordered a 67mm set and received 62mm instead... The seller responded quickly to resolve the issue. would recommend