The product is correctly advertised as a second choice, so I stood on scratches and possibly even a dirt that were just out of dry brushed. But what I got was a Isomate with 2 thumb-sized holes! Of course, in addition to the scratches which had moved into the ISO-mat a variety of substrates. Luckily I need them rather than back to the fight backpack and as a cushion rather than ISO-mat ...