Klein is not named for Calvin Klein, nor Anne Klein, nor Yves Klein. It is instead named for the Klein Bottle, which is one of the most delightful brain-bending non-orientable surfaces in existence. Taupe-ish goldy base is jam-packed (but how did you fill it?!) with four kinds of opalescent sheer glitter in two sizes, plus blue and violet sparkles, plus a bunch of other microglitter. Went nuts, this one has 20+ ingredients, glows in the dark, and is generally just amazing. Also? GLITTERBOMB. You know how it works -- extra top coat, and a coat of Glassy AF wouldn't hurt.