Slightly better than what you find in Chinese stores. The lenses easily become blurry and they came with loose screws which I tightened because otherwise I would have had to look for them. At least they are comfortable and relatively good for their price, able to survive a few months.

I bought them as a second pair so that I don't have to carry my expensive ones everywhere with me, as prescribed by my ophthalmologist. They are really worth it, you can see well (be careful to choose the correct lens power, I have +1.25), they are relatively durable if you take care of them a little, and I am very satisfied. If anything ever happens to them, I would buy the same ones again!