The ever popular one-piece stair tread and riser is a single piece of highly durable rubber that creates a seamless setting between the tread and the riser.  Not only does this product give stairs a well-groomed look, but it also makes cleaning the staircases easier.  When using this product you will also decrease the likelihood of moisture submerging under the anti-slip tread.  This, in turn, increases the lifespan and quality of the product.  By consolidating the two pieces in to one, you get a safer, longer life out of your stair tread.