Category 29-SPECIAL PROJECTS: Inkjet/Dye Sub (specialty items [e.g, magnets, name tags], contour-cut items [e.g., stickers, sports graphics], items printed on rigid substrates [e.g., coasters, mugs], vinyl lettering, wraps, digital enhancements, etc.)
It could be a typographical error that the client missed in proofing or an uneven fold or even a stray ink mark