Very stable, durable, and lightweight. I recommend it even for the elderly, where the above parameters are important.
Since it is not particularly lightweight, I believe it is not pure aluminum, but an alloy. And this is to have a lower weight but at the same time have greater mechanical strength. You can understand it when you climb on it, even if you are overweight. It doesn't wobble and feels very stable.
Quality product. I recommend it without hesitation.

Height (closed): 90cm
Width: 42cm
Thickness: 3cm on the top part and 5cm on the bottom part.