SOOO disappointed.  They've been on my kitchen floor for 5 days.  The edges are starting to fray and despite all of our best efforts to minimize them, the creases won't come out.  When I walk on them in tennis shoes, they stick to my shoes and crimp up under my feet.  They are thin and cheaply made.  Wish I had returned them.  Will never buy this product again.  Now have to spend more money to get something better.