Abstract: The protective package device, which can be varied in size to accommodate articles within a given dimensional range, includes a plurality of insert members, and a given number of corner sleeve members corresponding to the number of corners of the article being enclosed.An insert member when folded in one fashion engages straight sides of the article, and when folded in another fashion engages a corner portion of the article. The corner sleeve members are installed after the insert members are engaged with the article and are sized to overlap each other when installed on articles within the given dimensional range. The corner sleeve members can thus telescopically expand or contract to different package sizes determined by the enclosed article.