I have the sponge bought mainly with the expectation in the winter to have finally (largely) streak-free windows. Unfortunately, I realized that this desire still not come true, the discs are hardly less covered with streaks, as after processing with cheaper sponges. However, the material feels high quality, the sponge is not so hard when it is dry, as one or the other of the gas station, or from the hardware store and has therefore more absorbent. Why still 3 stars. Perhaps the costs will pay off over a longer service life, plus I can (still) do not say anything, because I use the sponge only for a few weeks.
