We're not talking insects here. Be humorous and facetious this Halloween when you dress up in this killer 'B' costume. The novelty costume consists of a yellow 100% polyester, blood-spattered 'B' that slips on easily over the head and has holes at the sides for arms. Also included is a plush, foam knife to complete your Killer 'B' costume. Show off this costume as well as your impeccable sense of humor at your next Halloween or costume party. Adult One Size Fits Most.