This square foldable basin mold breaks away from conventional round designs with a more regular and efficient square structure. The finished product is flat and light when folded, and expands to reveal a deep, large-capacity water basin. The main advantage of the square design lies in its efficient corner usage; whether placed in a narrow corner of a kitchen sink or neatly stacked on a shelf, it is more stable and harmonious than a round basin. Made from high-strength injection molding materials with thick walls, it boasts strong impact resistance and easily handles daily tasks like washing vegetables, kneading dough, or holding various ingredients.