Deluxe Classic Shirt Costume - Large - Chest Size 44 This adult Star Trek Mr. Spock costume includes one deluxe blue shirt with embroidered emblem. Our adult Star Trek Classic Deluxe Blue Shirt comes in sizes Small, Medium, Large, X-Large. This classic Mr Spock Starfleet shirt for men is an authentic Star Trek costume. This Star Trek Classic Deluxe Blue Shirt is an officially licensed Star Trek costume. Star Trek costume accessories, Star Trek phaser, Mr. Spock ears, and Mr. Spock wig sold separately.