Adult Heinz Mustard Costume Polyfoam Our mustard costume includes a smock style mustard bottle with open face and arm openings. Our adult mustard costume comes in size One Size. The black pants and shirt are not included with this funny mustard costume. Please note: This item's color may vary due to inherent manufacturing variations or your computer monitor's color settings. The item you receive will be identical or substantially similar to the item pictured in this listing.