Klein Bottle

A Klein bottle is a mathematical surface that has only one side and one edge, unlike a typical object which has two distinct sides. Imagine taking a Möbius strip (which has only one side) and connecting it in a way that the inside and outside merge seamlessly without any boundaries or edges. In three-dimensional space, a true Klein bottle can't exist without intersecting itself, but conceptually, it’s a shape with a continuous surface that twists and loops through itself, embodying a non-orientable surface explained through topology.