Abstract: In the suitcase according to this invention each of its two parts (container or cover) is formed from a dismountable belt with four panels and from a bottom connected at the four corners through four structural connection parts, each of the latter comprising known assembling and/or fitting in elements or means for the edge portions of two adjacent panels and for the corresponding angle of the bottom to be connected so as to form a rectangular trihedron used as means for supporting, mounting and securing a protective corner, on the one hand, and on the other hand, reinforcing corner irons protecting from shocks in the longitudinal, vertical and transverse directions, each corner iron clamping the selvedge of a suitcase coating material against the corresponding panel.