I was perplexed before buying, a friend told me try you'll see it works and the result is good! and it's true ... well that sucks the windows are beautiful, a little microfiber blow on the edges and voila! the downside is that I did not buy the handle is my windows are high so he must mount the stool with this machine, it is not heavy but I'm not prone to vertigo therefore well on my frank 4 stairs ... I will remedy that very quickly, then that is also the price of the handle which had slowed me. good product to recommend and not hesitate to take the stick!