Memories of libraries and, oh no, report cards. Such a wonderful shape. The basic sleeve - slide our inside for an invitation. In our perfect black with no hint of blue or brown. Decorate with paper, photos, ribbon, or rubberstamps. Fits into our . Click "alternative view" to see how this enclosure can be used and embellished. Size: 5" x 7" Sold in packs of 10. When designing, remember that darker colors may rub off on lighter colors. Consider using a layer (such as tissue) between the different colors.