Abstract: A device for storing and transporting articles embodies a self-openable carton which comprises, in integral combination, a pair of first sidewalls hingedly connected to each other by a hinge crease, a pair of remote folded sidewalls, each one of which is respectively connected to corresponding ones of the first pair of sidewalls, wherein the remote sidewalls have transversely folded reinforcing end tabs. The carton, as envisioned, comprises first and second interior and diagonally arranged retaining walls. Each of the retaining walls is connected to and folded with respect to corresponding ones of the remote sidewalls. Each of the retaining walls may be formed with at least one article receiving compartment, such that whenever in a locked and assembled position each of the diagonal retaining walls is in opposed relation with respect to the other, and whenever in an unlocked position are enabled to automatically move apart from each other to thereby expose articles received within the compartments.