A foldable
bathtub, said tub consisting of a container designed to contain water and enable a user to bathe therein, said tub having one or more
peripheral walls with fold lines and flexible edges between said
peripheral walls to enable folding, characterized in that the
bathtub (10) has, on at least two opposite first side walls (11), a vertical fold line (12) which starts from the upper edge (13) of said wall and is divided both into
diagonal fold lines (14) towards the corners (15) of the first side walls (11), which coincide with the corners of the underside (21), and into at least one horizontal fold line (16) towards at least one of the second side walls (17) which is not opposite the first side walls (11); wherein at least one of the second side walls (17)
lying between the first opposite side walls (11) comprises a horizontal fold line (16) which, in this horizontal plane, mediates the folding of the first opposite side walls (11) together with the second side wall (17)
lying between them (11); wherein the underside (21) of the tray (10) corresponding to the base is free of any intermediate fold lines; wherein the
bathtub (10) comprises, on the edges (13) of the first opposite side walls (11) containing vertical folding lines (12), folding locking elements (18) in the form of elements which, in their locking position, prevent the change in the position of the two parts of the edge (13) with respect to the vertical folding line (12), the alternative positioning of these locking elements (18) on the edge (13) removing the blocking of the folding of the first opposite side walls (11); and wherein the locking element (18) in the locking position reveals a first mark (19) visible to the user, which indicates the correct placement of the locking element (18), whereas in the case of a deviating position in the positioning section of the locking element (18) on the edge (13), which is not the position of the secure locking, the locking element covers the mark (19) indicating the secure use and reveals a second mark (20) as an indicator of a non-recommended use.