Grip pad was easy to cut and fit to the outdoor mats i planned to place on them.  The pads have held up well (now in season 2) and appear to elevate the mats to help them dry.  Only problem is that when it rains the mats get so saturated i'm not sure how much the grip pads really helps the mats to dry.  Even in direct sunlight the mats stay wet for days after a rain.