What is this cool sounding name in the title of this post? Well, let me first introduce you to the concept of a Klein Bottle (no sound is necessary to understand how awesome this is):

“In mathematics, the Klein bottle is a certain non-orientable surface, i.e., a surface (a two-dimensional manifold) with no distinct “inner” and “outer” sides. Other related non-orientable objects include the Möbius strip and the real projective plane. Whereas a Möbius strip is a two dimensional surface with boundary, a Klein bottle has no boundary. (For comparison, a sphere is an orientable surface with no boundary.)” (Wikipedia; yeah, I know, it’s not the best source, but I’m too lazy to find a better one).

Anyways, the bottle is essentially two Mobius strips patched together. Now, here’s the awesome – THE KLEIN STEIN!

I really want one of these. Klein bottles are just awesome in general.