This Clover No.5030 Air Erasable Marker/Purple Extra Fine is ideal for quilters or any sewing project that requires marking for cutting or prior to sewing. The Markings disappear naturally or with water. This marker is great for planning sewing projects. It works equally well on light or dark fabrics. The air erasable feature gives ample time, 2 to 7 days to finalize the details. Roll resistant cap keeps marker in place.