CoverGrip is a specially designed drop cloth for safety, holds fast to floors, resists slips, slidesand absorbs paint. CoverGrip drop cloths are manufactured with thousands of tiny, rubberized dots, firmly attached to the bottom ofeach protective cloth. These dots are slightly rounded, which is what makes them so effective. There's nothing in the dots themselves that causes them to stick to a slippery floor, but once pressure is applied the rubber dots grab and hold firm, like sneakers on a basketball court. And because they're rounded, the dots continue to hold, gripping tight even when under a shifting load. The rowsof dots also enable CoverGrip drop cloths to easily fold and conform to surfaces, like stairs.