It looks sturdy, but it's not... Entirely made of plastic, it's not suitable for continuous and "painful" use...

I am disappointed because (apparently) there is no setting to keep it stable, so it constantly moves around, making a creaking noise... which is quite annoying.

For 31 euros, it's an incredible machine. I would even pay up to 40-50 euros now that I have it in my hands. Maybe I wouldn't have paid that much if I didn't know what I was buying. Get this and wait for 10 days (as I see that it's not available in stock) instead of spending 10 euros and 20 euros on stupid things that will break on you within a week.

Solid construction, 3 height settings, very convenient, made a huge difference in body posture immediately.