Klein Bottle

The Klein Bottle is a three-dimensional container with only one surface and two closed ends, defying conventional spatial geometry. Its unique curvature allows liquids to flow seamlessly between its interior and exterior. Although seemingly impossible by classical laws of physics, the Klein Bottle has been crafted using advanced non-Euclidean materials science. When filled with water, the Klein Bottle's contents appear to shift and ripple through itself, creating mesmerizing patterns within its mirrored surface. Due to its self-intersecting topology, the bottle requires special handling to prevent paradoxical occurrences.