In the first few days, almost all the plastic anti-slip bumps "broke".... we filled it with rubber balls.... from then on, everything is fine, one year later in an outdoor space.

I was looking for this specific rubber mat for its quality and durability. It lasts many many years.

Very good. I bought it for my country house which has sand, leaves, and little pieces of trash instead of the old plastic one, and it keeps all the big things and whatever sticks to the shoes.