A 4D Pocket is a fictional storage device that exists in four dimensions, allowing characters to store objects much larger than the pocket itself. This concept is famously featured in the Japanese manga and anime series Doraemon, where the robotic cat Doraemon uses his four-dimensional pocket (yojigen poketto) to carry futuristic gadgets of limitless size and quantity. It has become an iconic element of the series, symbolizing convenience and imagination in a compact form.
