The On the Go, the new brush set by Cosmogen, is four brushes in one. Thebrushis portable and is a convenient way to carry 4 brushes in 1, so it ismulti-functional and travel friendly. The brushes can be customized by color or brush in any way. The brushes offered include: Lip, Eyeliner, Eyebrow, and Shadow. The handle and ferrule can also be customized to any color or logo.