I bought the sponge in the random color choice. The reasons were the low price and the positive reviews on average. Out of the box came to meet me an acrid chemical odor. I can "air out" the sponge a few days on my balcony, in the hope that the smell would dissipate. However, this is not happening. The smell is not so much, but is still quite strong and caused headaches quickly. The sponge keeps me indeed well on the whiteboard and also does what it should, but the smell is not bearable and certainly not healthy. Therefore, I advise everyone to his health at heart, to buy another sponge for a few more.
