I got carried away and decided to get something of good quality....
In terms of materials, it is plastic like everything else. A little better, a little worse... Plastic.
As soon as I received it, I opened it immediately to charge my phone. Oh no. Surprise. The application on the lighter is at least tragic. I managed to do it after many attempts.
I thought maybe it's not the charger's fault but the car's lighter. So I went to a junkyard I have for testing on its own lighter. Exactly the same. Tragic application there too.
I do not recommend it at all. If you can, avoid it.

Very high quality charger and very fast. Imagine that it charged my LG G2, which had a very large battery and different needs from the phone I have now (Xiaomi Mi4), very quickly. The Mi4 really charges it to the maximum in no time. Its plastic has very good quality and its cable is long (reaches comfortably if you have the phone on a windshield mount).