Wet Surface Marker 570 is a marker that can be used on wet, oily surfaces. It lets you mark clearly and permanently on damp boxes, swimsuits, umbrellas, rain boots, and other wet (oily) surfaces. The quick-drying, smudge-free nature of the ink makes it a good choice for places where levels of humidity are high or contact with water is frequent, such as fish markets, swimming pools, or ships.