(+) Plaster in gel form, comfortable application, satisfactory size, additional safety adhesive that secures it extremely well to the skin, pleasant feeling of warmth, not excessive, very easy removal without any pain when pulling.
(-) Personally, I did not find anything negative.

It will now be one of my top choices

Unfortunately, it causes itching every time, quite intense. Additionally, it is somewhat difficult to apply in hard-to-reach areas and has a relatively unpleasant smell. It burns to a moderate, pleasant degree, otherwise, like a heating pad. I did not see any particular relief after use, so I will not choose it again.

This particular plaster has a gel on top which is not absorbed by the skin and gives you the feeling that the area where you have applied it is constantly wet. After 6 hours of use, it slightly warmed the area where it was placed, but did not relieve the pain. It also came off very quickly despite being applied with an extra adhesive. It is a product that I would not recommend, as there are much more effective products available on the market.

This specific patch takes at least 20-30 minutes to start "warming up" the waist area, it sticks relatively easily, has a gel that touches the skin, and to prevent it from coming off, it has an additional adhesive that goes on top of the patch.
It warms up quite well, but not as much as the Leon's, and it somewhat relieves the pain. I will come back after a few uses.

18-1-2022 (additional comment):
1. It sticks relatively easily and has an additional adhesive that goes on top to prevent the patch from coming off.
2. It doesn't have a strong smell.
3. It takes a while to warm up, about 20+ minutes, but it lasts for about 6 hours and you feel a burning sensation at the spot, without the exaggeration of the Leon's (which is firstly scarce, and secondly, I think it does a slightly better job).

It comes off very easily. It is a gel adhesive style that, although it doesn't hurt when you remove it, it doesn't stick to the skin at all, so it easily comes off. For this reason, they also provide an additional adhesive to put on top of the patch, but even then it moves with movement. As a result, I can say that I noticed some difference.

From what I have tried... It is the most effective.. You feel the heat enough and it doesn't come off.

It does the job... if you can't handle the lion's roar, this will definitely relieve you, you just have to put in 4 to get the result of a lion.

Very satisfied with this specific product! Whenever I have needed it, I have applied it at night because I can't stand it burning me so much during the day, and also in the morning I noticed difficulty in removing it!

big scam.. small surface and has a very watery gel that doesn't warm you up at all, and you feel like you've wet yourself wherever you touch it and it easily comes off.. stay away!