Disclosed is a partition and cover structure that can be accommodated in a shoebox and can be made from one or more conveniently grooved and cut cardboard sheets. The structure includes a substantially rectangular base divided into first and second portions having trapezoidal rectangular shape. The portions of base are consecutive to each other at a respective edge coincident with the oblique side of the aforesaid trapezoidal shape. A pair of mutually opposed partition walls are connected, by way of a fold, to the portions of base at the aforesaid edges, respectively. The structure further includes four side walls two-by-two mutually opposite with respect to the portions of base and connected to the latter by way of respective folds. Also disclosed is a shoebox including the structure, and to one or more substantially flat elements foldable in suitable manner to obtain such structure.