The SpongeBob SquarePants Barnacle Boy Adult Costume in size medium is a complete outfit featuring elastic/stretch material for a comfortable fit. Made of polyester in a colorful multi-color design, this costume is perfect for fans of the SpongeBob theme. The Spirit brand ensures high-quality and authentic details, making it a fun and nostalgic addition to any costume collection. Perfect for special events, costumes, or theater productions, this Barnacle Boy outfit is sure to bring smiles to faces of all ages.