I bought two identical mats and I have them in my yard. The dimensions are fine. I don't have any problems at all. They don't retain water. Before these, I had mats without holes and the rainwater would get carried inside when I went outside. I was frustrated. These ones are very helpful. I recommend them for outdoor spaces.

For the space and use I wanted it for, it was the most suitable. Very cheap and durable!!
Update 27/04/2022
After two years of use, it remains like new. I will buy two more for in front of the balcony door.