The product is ok The mats smell not chemical but to rubber and that's logical;) The measure 31x31x1cm not match the actual size. I had mats to this extent at home and do not go together Have you placed on each other and they have about 3cm difference. Thus, these mats are slightly smaller than indicated. The letters fall out very facilitated but if you want to use it only for the ground they are super.
The delivery was not as Amazon or the dealer specified. I had to wait a few days longer.