I'm not sure how the product can be described as sturdy. It arrived on time, packaged well, so no complaints on that front, but the actual product was actually just a joke. Bought it after the other reviews as I wanted to save money on a window cleaner and we've a couple of windows which are hard to reach, so I thought this product would be ideal.
Opened it up and yes, the extendable pole is OK, but the actual head is so badly put together, after 1 attempt at changing the angle of the head I had to tape it up to stop if falling apart. The angled head is held together by a piece of plastic and a screw that you can't actually tighten without it falling apart, so when you put the slightest bit of pressure on i.e. leant it against the window it just tipped backwards.
My windows ended up more smeary than they started due to the poor quality of the blade which is supposed to clear away all remaining water.
I know it wasn't expensive but I'd expect a bit more for the money. If you want your windows to look good and you don't want to spend most of the time trying to fix the cleaner, don't go near this product!