These are perfect for me.  I wish they were a little longer, but they fit the stairs and look nice.  A rubbery smell when you take out of the box but they are made of rubber!! And will be placed outside, so not worried about that.  I like the open look so that the brick underneath shows through.  Can also see if leaves get caught underneath.  The other one I had would get nasty underneath.  Would definitely recommend but check your measurements to make sure this is what you want.  It's very nice that there are 6 in the pack.  I'm using them on the back steps also.