Sharpie (marker) – Wikipedia

Sharpie is a brand of writing instruments (mainly permanent marker pens) manufactured by Newell Brands, a public company, headquartered in Atlanta, Georgia.Originally designating a single permanent marker, the Sharpie brand has been widely expanded and can now be found on a variety of previously unrelated permanent and non-permanent pens and markers formerly marketed under other brands.

: https://en.wikipedia.org/wiki/Sharpie_%28marker%29