Product review (4 stars): I like the fact that they are as clear and unobtrusive ...
I like the fact that they are as clear and unobtrusive as I suppose is possible. They perform the task.  I am not a messy cook but accidents happen.  They also keep crumbs and dust from settling between my range-top cooktop and marble counter top.  My only dismay is that they are not longer to extend closer to the wall.  Extra material could then be cut off for those who don't need it or the product could be sold in various lengths.