The Incredible Nib is made of nylon acrylic fiber and comes in several nib shapes, i.e., deer foot, pointed, chisel edged, etc. I have the latter. Before use, one wets the nib and the nib will wick up liquid but doesn’t get soft and mushy like a sponge does. Some of the suggested uses are blending paints, lifting out, applying frisket, gouache, acrylic, and fabric paint. When I needed an easy to mail gift for my daughter, it occurred to me that a personalized tote bag would be ideal. I used “the nib” to apply pearlescent acrylic paint when lettering on the now very washed out tote bag shown below. The rose was also done with this paint. (Not all of the lettering was done with this “pen”.) The Incredible Nib can be sharpened or reshaped with sandpaper. I tried to reshape the small end of mine, but as I recall didn’t get it the way I wanted it. You can see that I somehow bent it in the process in the photo below. This tool can be found at Dick Blick, Pearl Art Supply, MisterArt and other places.