If you are sensitive to toxic smelling chemicals then you will love this mat. I have a hyper sensitivity to chemicals so when I ordered this mat online I figured that I would have to put it outside on the patio for a couple of months before bringing it inside to my home office. Wow! was I surprised. No odor coming off this mat. I know you can order mats that do not smell of chemicals but at a much higher price! Never thought you could buy a non toxic mat at such a reasonable price! I am thrilled with this purchase.
Description said it was for carpet. I am using it on a firm berber carpet and the mat is not hard enough to stop my chair from making indentations in the mat. I literally have to lift my body up from the chair in order to scoot my chair casters out of the indentations. I would not recommend this product. May be OK on a tile floor but it has spikes on the bottom.