Abstract: An attachment for protecting a substantially flat article comprising a first portion that includes a body and a plurality of finger-like projections and a second portion that includes a body portion and a plurality of finger-like projections is disclosed. The first and second portions define 90° angle. The attachment is formed from a foamed polymerized material, such as a resilient foamed material. The attachment is cut into the first and second portions. The first portion is placed on one side of the corner of the flat article. The second portion is turned over and the interlocking finger-like projections of the second component are fitted to the interlocking finger-like projections of the first portion. As a variation of the use of the disclosed invention the first and second portions may be cut at their corners to allow the first and second portions to be fitted to an edge of the flat article.