Rubie's Costume Kids Star Trek: Beyond Spock Costume, Medium 97% Polyester, 3% Spandex Imported NOTE: Costume sizes are different from clothing sizes; review the Rubie's size chart when selecting a size and consider buying the next size up if you are at the top of a size range Costume Shirt and Pants Star Trek costumes are officially licensed by Paramount Pictures and CBS Studios Look for Star Trek costumes and accessories in sizes and styles for the entire family In business since 1950, Rubie's is a leader in the costume world