I have no idea WHY I needed nor WHY I like it (other than the color, I really don't like to stamp in black!) It's Burnt Umber & it says: Featuring Hybrid Ink, the first all purpose craft ink. Blending the best of both pigment & dye inks into one inkpad. Fine art colors that look like pigment but dry like dye.
I have NO IDEA what that means. LOL I just like the way it stamps. I'm pretty sure I use it for watercoloring w/o heat setting it....