An optimized folding display, comprising: [a] two facing main side panels (1, 2) arranged parallel at a given distance from one another, made from a rigid sheet material from the group comprising cardboard, wood or the like, each of said side panels (1, 2) having a set of first vertical slots or cuts (9a, 9b), the first slots or cuts of one of said two side panels (1, 2) being a symmetrical reflection of the first slots or cuts of the other one of said two side panels (1, 2), said first slots or cuts (9a, 9b) of one of said side panels (1, 2) facing said corresponding first slots or cuts (9a, 9b) of the other one of said two panels (1, 2); [b] a traverse assembly divided into [i] a central region having the same length as said separation distance of said main side panels (1, 2), and [ii] at least two end regions (5a, 5b) that can be articulated by means of creasing lines (6a, 6b); [c] said at least two end regions (5a, 5b) of each of said traverses correspondingly pass through said first facing slots or cuts (9a, 9b) of said side panels (1, 2), and [d] at least one shelf element is located between said two side panels (1, 2) of said display and resting flat on at least two of said traverses located at a similar height, forming a shelving assembly; characterized in that [e] said traverse assembly is formed by narrow and elongated rectangular boards of semi-flexible sheet material; [f] said at least two end regions (5a, 5b) are folded by bending along said creasing lines (6a, 6b) towards the corresponding outer surface of each of said side panels (1, 2); [g] said display further comprising fixing means (11, 12, 13, 14) for fixing said at least two end regions (5a, 5b) contiguous to said central region of said traverses, from the group comprising glue, staples, fasteners, anchors or the like, for keeping each of said at least two end regions (5a, 5b) flattened and fixed to the outer surface of the corresponding side panel (1, 2); in that [h] at least two of said traverses have their planes separated a given distance, such that said traverse assembly connected to said corresponding outer surfaces of said side panels (1, 2) form an articulated rhombus which from an expanded position can diagonally be closed into a folded position. [a] two facing main side panels (1, 2) arranged parallel at a given distance from one another, made from a rigid sheet material from the group comprising cardboard, wood or the like, each of said side panels (1, 2) having a set of first vertical slots or cuts (9a, 9b), the first slots or cuts of one of said two side panels (1, 2) being a symmetrical reflection of the first slots or cuts of the other one of said two side panels (1, 2), said first slots or cuts (9a, 9b) of one of said side panels (1, 2) facing said corresponding first slots or cuts (9a, 9b) of the other one of said two panels (1, 2); [b] a traverse assembly divided into [i] a central region having the same length as said separation distance of said main side panels (1, 2), and [ii] at least two end regions (5a, 5b) that can be articulated by means of creasing lines (6a, 6b); [i] a central region having the same length as said separation distance of said main side panels (1, 2), and [ii] at least two end regions (5a, 5b) that can be articulated by means of creasing lines (6a, 6b); [c] said at least two end regions (5a, 5b) of each of said traverses correspondingly pass through said first facing slots or cuts (9a, 9b) of said side panels (1, 2), and [d] at least one shelf element is located between said two side panels (1, 2) of said display and resting flat on at least two of said traverses located at a similar height, forming a shelving assembly; characterized in that [e] said traverse assembly is formed by narrow and elongated rectangular boards of semi-flexible sheet material; [f] said at least two end regions (5a, 5b) are folded by bending along said creasing lines (6a, 6b) towards the corresponding outer surface of each of said side panels (1, 2); [g] said display further comprising fixing means (11, 12, 13, 14) for fixing said at least two end regions (5a, 5b) contiguous to said central region of said traverses, from the group comprising glue, staples, fasteners, anchors or the like, for keeping each of said at least two end regions (5a, 5b) flattened and fixed to the outer surface of the corresponding side panel (1, 2); in that [h] at least two of said traverses have their planes separated a given distance, such that said traverse assembly connected to said corresponding outer surfaces of said side panels (1, 2) form an articulated rhombus which from an expanded position can diagonally be closed into a folded position.