Abstract: A portable, scalably adjustable cargo securement apparatus is provided which includes laterally extensible rail members, longitudinally extensible rail members, and elongated stabilizer arbors having an elongated, tubular configuration generally circular in cross-section which interconnect via a plurality of impingement locking brackets so as to form a generally square-shaped framework for confining cargo within its boundaries. The impingement locking brackets function to allow for selective, lateral and longitudinal slidable engagement by laterally extensible rail members and longitudinally extensible rail members. The cargo securement apparatus is adapted to be utilized in a cargo area of sport utility vehicles. A plurality of feet function to bear against a cargo floor, thereby according balanced stability to the cargo securement apparatus.