3 stars because the product is noteworthy. But.... It is not suitable for Greece; even the slightest crack in the container you put it in will leave you soaked with coffee, soda, or whatever you have inside. It is a product that is not meant for Greek roads in any case.

It's fine, it does its job for my coffee that I bought it for. Now, I haven't tested its durability by putting weights like bottles with water, etc., as they claim... minus one star for the lack of elasticity (which obviously makes it break)

Fake material. We bought 3 for our bicycles and all 3 broke within a week. They couldn't hold the water bottle inside in any puddle, so I had to collect it with cups from the road

It fits perfectly on the machine, it supports the coffee cup perfectly.
I could say it's worth more than its price as a product.
Just make sure to check it well before you buy it for any manufacturing defects - mine had a loose component that screws to tighten the ball - I found out outside the store where I bought it and they immediately replaced it for me.