The invention relates to an anatomical absorbent and waste-retaining article (disposable or reusable), such as a diaper, which consists of a flexible laminar body that comprises a first, impermeable layer, and a second, absorbent layer adhered to the first layer on one of the faces thereof and which partially or entirely covers the surface of said face, said laminar body being configured to fold over itself (in its original state or in a position of use) and to delimit a closed inner space, in the form of a container, such that the impermeable layer constitutes the outer wall and the absorbent layer constitutes the inner wall of the space in all of, or part of, the inner perimeter thereof and a hole that passes through both layers and which comes into contact with the urinary organ at the outer layer when the body is folded over itself in a position of use to enable the retention of fluids within the container, and in the case of the male urinary organ, it allows for the introduction of the same from the outer layer to the inner layer, such that it remains inside the container when the body is folded over itself.